• (2014). S. Idelsohn (Ed.), Numerical Simulations of Coupled Problems in Engineering, Part III, Chapter 7 Computational Methods, Vol. 33, Springer, pp. 157-169

    Abstract
    This work deals with the numerical simulation and material flow visualization of Friction Stir Welding (FSW) processes. The 4-th order Runge-Kutta (RK4) integration method [...]

  • Metals (2019). Vol. 9 (5), pp. 573

    Abstract
    The computational modeling and numerical simulation of Friction Stir Welding (FSW) processes is an extremely challenging task due to the highly nonlinear and coupled nature [...]

  • Int. J. Numer. Meth. Engng. (2017). (preprint) Vol. 113 (6), pp. 910-937

    Abstract
    In this paper, conserving time‐stepping algorithms for frictionless and full stick friction dynamic contact problems are presented. Time integration algorithms for frictionless [...]

  • G. Schmitz, A. Engstrom, R. Bernhardt, U. Prahl, L. Adam, J. Seyfarth, M. Apel, C. Agelet de Saracibar, P. Korzhavyi, J. Agren, B. Patzak
    Journal of The Minerals, Metals & Materials Society (2016). Vol. 68 (1), pp. 70-76

    Abstract
    The Integrated Computational Materials Engineering expert group (ICMEg), a coordination activity of the European Commission, aims at developing a global and open standard [...]

  • Finite Elements in Analysis and Design (2015). (preprint) Vol. 93 (1), pp. 107-125

    Abstract
    This paper deals with the computational modeling and numerical simulation of contact problems at finite deformations using the finite element method. Quasi-static and dynamic [...]

  • J. Rojek, F. Zárate, C. Agelet de Saracibar, C. Gilbourne, P. Verdot
    Int. J. Numer. Meth. Engng. (2004). Vol. 62 (11), pp. 1241-1441

    Abstract
    This paper presents a numerical model of mould manufacture for the lost foam casting process. The process of mould filling with sand and sand compaction by vibration are modelled [...]

  • Archives of Comp. Meths. Engng. (1998). Vol. 5 (3), pp. 243-301

    Abstract
    In this paper a numerical model for the analysis of coupled thermomechanical multi-body frictional contact problems at finite deformations is presented. The multi-body frictional [...]

  • S. Benítez, M. Chiumenti, F. Sepulcre, I. Achaerandio, M. Pujolá
    Journal of Food Engineering (2012). Vol. 113 (4), pp. 527-533

    Abstract
    The effect of temperature on the respiration rate and texture of fresh cut pineapple was studied over the course of 10 days of storage. The thermal exchange between the [...]

  • Comput. Methods Appl. Mech. Engrg., (2004). Vol. 193 (9-11), pp. 849-880

    Abstract
    This paper describes a novel formulation for the solution of problems involving shear band localization using a local isotropic J2 continuum damage model and mixed linear [...]

  • Comput. Methods Appl. Mech. Engrg., (1999). Vol. 177 (3-4), pp. 401-426

    Abstract
    The evolution of the contact surfaces wear may become particularly important in the definition of the frictional behavior, in particular for frictional contact problems involving [...]

  • M. Celigueta, S. Latorre, F. Arrufat, E. Oñate
    Computational Particle Mechanics (2019). (prepint)

    Abstract
    We present a numerical procedure for elastic and non linear analysis (including fracture situations) of solid materials and structures using the Discrete Element Method (DEM). [...]

  • Finite Elements in Analysis and Design (2016). Vol. 112, pp. 26-39

    Abstract
    Progressive fracture in quasi-brittle materials is often treated via strain softening models in continuum damage mechanics. Such constitutive relations favour spurious strain [...]

  • Revista de Obras Públicas (2004). Vol. 151 (3449), pp. 41-48

    Abstract
    El artículo revindica el valor de los métodos de cálculo que se enseñan en las Escuelas de Ingeniería, como herramientas indispensables [...]

  • R. Flores, R. Ortega, A. Ilin, D. Simpkins, E. Oñate
    Computational Particle Mechanics (2019). Vol. 6 (2), pp 163–175

    Abstract
    We present a simulation tool for transient events in complex hydraulic networks. The code includes modelling of the transport of suspended cuttings in near-vertical wells. [...]

  • Computational Particle Mechanics (2019). pp. 1-15

    Abstract
    The discrete element method (DEM) is an emerging tool for the calculation of the behaviour of bulk materials. One of the key features of this method is the explicit integration [...]

  • X. Zhang, E. Oñate, S. Galindo, J. Bleyer, K. Krabbenhoft
    Comput. Methods Appl. Mech. Engrg., (2019). Vol. 343, pp. 314-338

    Abstract
    Consequences of submarine landslides include both their direct impact on offshore infrastructure, such as subsea electric cables and gas/oil pipelines, [...]

  • I. Pérez, M. Farias, M. Castro, R. Roselló, C. Morfa, L. Medina, E. Oñate
    Int J Numer Methods Eng. (2019). Vol. 118 (3), pp. 121-131

    Abstract
    A novel algorithm to reproduce the arrangement of grains in polycrystalline materials was recently published by the authors. In this original approach, a dense package of [...]

  • C. Recarey, I. Pérez, R. Roselló, M. Muniz, E. Hernández, R. Giraldo, E. Oñate
    Computer Methods in Applied Mechanics and Engineering (2019). Vol. 345, pp. 336-362

    Abstract
    Several theoretical contributions in order to establish a particle packing methodology are presented. In this respect, a generic formulation of a new method for packing [...]

  • J. Rojek, E. Oñate, C. Labra, H. Kargl, J. Akerman
    (2010). Technology Innovation in Underground Construction (TUNCONSTRUCT), G. Beer (Ed.)

    Abstract
    This paper presents an original thermomechanical model of rock cutting with evaluation of tool wear. The model has been developed within the framework of the discrete element [...]

  • E. Oñate, F. Flores
    Computer Methods in Applied Mechanics and Engineering (2005). Vol. 194 (21-24), 2406-2443

    Abstract
    A family of rotation-free three node triangular shell elements is presented. The simplest element of the family is based on an assumed constant curvature field expressed in [...]

  • E. Oñate, J. Miquel, F. Zárate
    Computers and Fluids (2007). Vol. 36 (1), pp. 92-112, 2007

    Abstract
    A stabilized finite element method (FEM) for the multidimensional steady state advection-diffusion-absorption equation is presented. The stabilized formulation is based on [...]

  • E. Oñate, J. Carbonell
    Computational Mechanics (2014). Vol. 54 (6), pp. 1583-1596, 2014

    Abstract
    We present a mixed velocity-pressure finite element formulation for solving the updated Lagrangian equations for quasi and fully incompressible fluids. Details of the governing [...]

  • International Journal of Computational Methods (2004). Vol. 1 (2), pp. 267-307

    Abstract
    We present a general formulation for analysis of fluid-structure interaction problems using the particle finite element method (PFEM). The key feature of the PFEM is the use [...]

  • X. Lu, X. Lin, M. Chiumenti, M. Cervera, Y. Hu, X. Ji, L. Ma, H. Yang, W. Huang
    Additive Manufacturing (2019). (preprint) Vol. 26, pp. 166-179

    Abstract
    Residual stresses and distortion in Additive Manufactured (AM) parts are two key obstacles which seriously hinder the wide application of this technology. Nowadays, understanding [...]

  • X. Lu, X. Lin, M. Chiumenti, M. Cervera, Y. Hu, X. Ji, L. Ma, W. Huang
    Int. J. Mechanical Sciences (2019). (preprint) Vol. 153-154, pp. 119-130

    Abstract
    Residual stresses and distortions are two technical obstacles for popularizing the additive manufacturing (AM) technology. The evolution of the stresses in AM components during [...]

  • G. Vlachakis, M. Cervera, G. Barbat, S. Salaustros
    Engineering Failure Analysis (2019). (preprint) Vol. 97, pp. 534-555

    Abstract
    The out-of-plane response is a complex and at the same time key aspect of the seismic vulnerability of masonry structures. It depends on several factors, some of which are [...]

  • N. Dialami, M. Cervera, M. Chiumenti
    Metals (2019). Vol. 9 (1), pp. 28-45

    Abstract
    This work studies the effect of the tool tilt angle on the generated heat and the material flow in the work pieces joint by Friction Stir Welding (FSW). An apropos kinematic [...]

  • N. Dialami, M. Cervera, M. Chiumenti, A. Segatori
    Int. J. Mechanical Sciences (2019). Vol. 151, pp. 61-69

    Abstract
    This work studies computationally and experimentally the joint line remnant defects emerging in friction stir welding (FSW) due to oxide layer propagation into the weld. A [...]

  • J. Rojek, E. Oñate
    Interaction and Multiscale Mechanics: An International Journal (IMMIJ) (2007). Vol. 1 (1), pp. 1-31

    Abstract
    The present paper presents multiscale modelling via coupling of the discrete and finite element methods. Theoretical formulation of the discrete element method using spherical [...]

  • S. Salaustros, M. Cervera, L. Pelà
    Archives of Comp. Meths. Engng. (2018). (preprint) Published online, pp. 1-45

    Abstract
    The importance of crack propagation in the structural behaviour of concrete and masonry structures has led to the development of a wide range of finite element methods for [...]

  • E. Salsi, M. Chiumenti, M. Cervera
    Metals (2018). Vol. 8 (8), pp. 633-657

    Abstract
    AM processes are characterized by complex thermal cycles that have a deep influence on the microstructural transformations of the deposited alloy. In this work, a general [...]

  • Structural Safety (2015). Vol 56, pp. 9-17

    Abstract
    Predictive models are essential in dam safety assessment. Both deterministic and statistical models applied in the day-to-day practice have demonstrated to be useful, although [...]

  • Structural Optimization (1999). Vol. 17 (2-3), pp. 162-171

    Abstract
    This paper describes some considerations around the analytical structural shape sensitivity analysis when the structural behaviour is computed using the finite element method [...]

  • R. Chacón, F. Guzmán, E. Mirabell, E. Real, E. Oñate
    Structural Health Monitoring (2009). Vol. 8 (3), pp. 195-205

    Abstract
    n this paper, an experimental test performed on a hybrid steel plate girder was subjected to concentrated loads at the end of an unstiffened panel is presented. This load [...]

  • Structural Control Health Monitoring (2017). Vol. 24 (11), Article Number: e2012

    Abstract
    The advances in information and communication technologies led to a general trend towards the availability of more detailed information on dam behaviour. This allows applying [...]

  • D. Lee, J. Periaux, L. González, K. Srinivas, E. Oñate
    Structural and Multidisciplinary Optimization (2012). Vol. 45 (3), pp. 433-450

    Abstract
    There are many applications in aeronautical/aerospace engineering where some values of the design parameters/states cannot be provided or determined accurately. These values [...]

  • C. Labra, J. Rojek, E. Oñate
    Rock Mechanics and Rock Engineering (2017). Vol. 50 (3), pp. 621-638

    Abstract
    This paper presents advanced computer simulation of rock cutting process typical for excavation works in civil engineering. Theoretical formulation of the hybrid discrete/finite [...]

  • Revue Européenne des Éléments Finis (2004). Vol. 13, pp. 637-666

    Abstract
    We present a general formulation for analysis of fluid-structure interaction problems using the particle finite element method (PFEM). The key feature of the PFEM is the use [...]

  • Procedia Engineering (2017). Vol. 175, pp. 226-232

    Abstract
    The main objective of this work lies in the development of a variational implicit Material Point Method (MPM), implemented in the open source Kratos Multiphysics framework. [...]

  • Ocean Engng. (2013). Vol. 66, pp. 92-100

    Abstract
    In this paper the Particle Finite Element Method (PFEM) is applied to the simulation of the sea-landing of an unmanned aerial vehicle (UAV). The problem of interest consists [...]

  • R. López, E. Oñate
    Neurocomputing (2008). Vol. 71 (13-15), pp. 2538-2543

    Abstract
    In this work an extended class of multilayer perceptron is presented. This includes independent parameters, boundary conditions and lower and upper bounds. In some cases, [...]

  • G. Lomboy, K. Kim, E. Oñate
    Mechanics of Advanced Materials and Structures (2007). Vol. 14 (2), pp. 89-105

    Abstract
    A nonlinear resultant shell element is developed for the solution of problems of composite plates and shells undergoing nonlinear static and nonlinear dynamic behavior with [...]

  • P. Norachan, K. Kim, E. Oñate
    Journal of Structural Engineering (2014). Vol. 140 (6), pp. 04014028/1-17

    Abstract
    The paper presents a systematically numerical procedure based on the finite-element method for three-dimensional analysis of segmentally constructed prestressed concrete bridges [...]

  • J. González, M. Chiumenti, M. Cervera, C. Agelet de Saracibar, F. Samaniego, I. Cobo
    Fusion Engineering and Design (2018). (preprint) Vol. 135, Part A, pp. 65-73

    Abstract
    The objective of ITER is to build a new Tokamak, with the goal of demonstrating the scientific and technical feasibility of fusion power. The First Wall Panels are the inner [...]

  • Journal of Engineering Mechanics (2010). Vol. 136 (4), pp. 455-463

    Abstract
    An excavation process is a nonlinear dynamic problem that includes geometrical, material, and contact nonlinearities. The simulation of ground excavation has to face contact [...]

  • G. Casas, A. Ferrer, E. Oñate
    Journal of Computational Physics (2018). Vol. 352, pp. 142-171

    Abstract
    In this work we put the method proposed by van Hinsberg et al. to the test, highlighting its accuracy and efficiency in a sequence of benchmarks of increasing complexity. [...]

  • C. Felippa, E. Oñate
    Journal of Applied Mechanics (2004). Vol. 71 (5), pp. 731-734

    Abstract
    We study three “incompressibility flavors” of linearly-elastic anisotropic solids that exhibit volumetric constraints: isochoric, hydroisochoric and rigidtropic. [...]

  • D. Lee, J. Periaux, L. González, E. Oñate, N. Qin
    Journal of Aircraft (2011). Vol. 48 (3) pp. 1084-1094

    Abstract
    The use of adaptive wing/aerofoil designs is being considered, as they are promising techniques in aeronautic/ aerospace since they can reduce aircraft emissions and improve [...]

  • F. Flores, E. Ortega, E. Oñate
    Journal of Aircraft (2010). Vol. 47, pp. 708-714

    Abstract
    The present work is part of a broader investigation aimed at improving the understanding of the aerodynamics of the rear aircraft section. Complex flow phenomena (e.g., [...]

  • J. Pons-Prats, G. Bugeda, F. Zárate, E. Oñate
    Journal of Aerospace Engineering (2011). Vol. 225, (10), pp. 1131-1151

    Abstract
    Uncertainties are a daily issue to deal with in aerospace engineering and applications. Robust optimization methods commonly use a random generation of the inputs and take [...]

  • International Journal of Space Structures (2009). Vol. 24 (4), pp. 205-210

    Abstract
    We propose here an efficient approach for treating the interaction between membranes and fluids. Slight compressibility of the fluid is assumed. Classical total Lagrangian [...]

  • J. Rojek, E. Oñate, C. Labra, H. Kargl
    Int. J. Rock Mechanics and Mining Sciences (2011). Vol. 48 (6), pp. 996-1010

    Abstract
    This paper presents numerical modelling of rock cutting processes. The model consists of a tool–rock system. The rock is modelled using the discrete element method, [...]

  • International Journal of Geomechanics (2015). Vol. 15 (4), pp. 04014060-1 (published online)

    Abstract
    This paper aims to present and validate a numerical technique for the simulation of the overtopping and onset of failure in rockfill dams caused by mass sliding. This goal [...]

  • Int. J. Numer. Anal. Meth. Geomech. (2017). Vol. 41 (1), pp. 110-134

    Abstract
    A new mixed displacement‐pressure element for solving solid–pore fluid interaction problems is presented. In the resulting coupled system of equations, the balance [...]

  • Int. J. Numer. Anal. Meth. Geomech. (2016). Vol. 40 (6), pp. 809-826

    Abstract
    Landslide‐generated impulse waves may have catastrophic consequences. The physical phenomenon is difficult to model because of the uncertainties in the kinematics of the [...]

  • C. Recarey Morfa, E. Oñate, J. Rojek, J. Canet, F. Zárate, G. Cadoce, C. Labra
    Ingeniería Civil (2005). Vol. 139, pp. 112-124

    Abstract
    Se presenta un modelo de elementos discretos o distintos (MED) en la modelizacion del ensayo de traccion indirecta o ensayo brasileno (Brazilian Test). Se realiza una comparacion [...]

  • European Journal of Computational Mechanics (2018). Vol. 27 (1), pp. 1-32

    Abstract
    The solid-shells are an attractive kind of element for the simulation of f orming processes, due to the fact that any kind of generic 3D constitutive law can be employed without [...]

  • Engineering Structures (2016). Vol. 119, pp. 230-251

    Abstract
    Predictive models are essential in dam safety assessment. They have been traditionally based on simple statistical tools such as the hydrostatic-season-time (HST) model. These [...]

  • Computers and Geotechnics (2018). Vol. 96, pp. 103-117

    Abstract
    A new computational technique for the simulation of 2D and 3D fracture propagation processes in saturated porous media is presented. A non-local damage model [...]

  • Computers and Geotechnics (2017). Vol. 85, pp. 220-229

    Abstract
    The Discrete Element Method (DEM) was found to be an effective numerical method for the calculation of engineering problems involving granular materials. [...]

  • X. Martinez, F. Rastellini, S. Oller, F. Flores, E. Oñate
    Composites Part B: Enginnering (2011). Vol. 42 (2), pp. 134-144

    Abstract
    The numerical simulation of complex failure modes of composite materials, such as delamination, can be computationally very demanding, as it [...]

  • L. Nallim, S. Oller, E. Oñate, F. Flores
    Composite Structures (2017). Vol. 163, pp. 168-184

    Abstract
    In this work a kinematics for laminated beams enriched with a refined formulation ZigZag (RZT), originally presented by Tessler et al. in 2007, introduced in a hierarchical [...]

  • Composite Structures (2015). Vol. 132, pp 1192-1205

    Abstract
    We present a new 2-noded beam element based on the refined zigzag theory and the classical Euler–Bernoulli beam theory for the static analysis of composite laminate [...]

  • Composite Structures (2014). Vol. 108, pp. 456-471

    Abstract
    A numerical method based on the Refined Zigzag Theory (RZT) to model delamination in composite laminated plate/shell structures is presented. The originality of this method [...]

  • Composite Structures (2013). Vol. 104, pp. 270-280

    Abstract
    A method based on the Refined Zigzag Theory (RZT) to model delamination in composite laminated beam structures is presented. The novelty of this method is the use of one-dimensional [...]

  • D. Lee, C. Morillo, S. Oller, G. Bugeda, E. Oñate
    Composite Structures (2013). Vol. 99, pp. 181-192

    Abstract
    Hybrid Composite Structures (HCSs) are consisting of alternating layers of Fiber-Reinforced Polymer and metal sheets. Mechanical properties and responses for off-design [...]

  • D. Lee, C. Morillo, G. Bugeda, S. Oller, E. Oñate
    Composite Structures (2012). Vol. 94 (3), pp. 1087-1096

    Abstract
    This paper presents a research work on stacking sequence design optimisation for multilayered composite plate using a parallel/distributed evolutionary algorithm. [...]

  • Archives of Comp. Meths. Engng. (2015). Vol. 22 (4), pp. 637-653

    Abstract
    The aim of the present work is to present an overview of some numerical procedures for the simulation of free surface flows within a porous structure. A particular algorithm [...]

  • Archives of Comp. Meths. Engng. (2017). Vol. 24 (1), pp. 1-21

    Abstract
    Predictive models are an important element in dam safety analysis. They provide an estimate of the dam response faced with a given load combination, which can be compared [...]

  • P. Dadvand, R. Rossi, E. Oñate
    Archives of Comp. Meths. Engng. (2010). Vol. 17 (3), pp 253-297

    Abstract
    The objective of this work is to describe the design and implementation of a framework for building multi-disciplinary finite element programs. The main goals are generality, [...]

  • G. Lomboy, S. Suthasupradit, K. Kim, E. Oñate
    Archives of Comp. Meths. Engng. (2009). Vol. 16 (2), pp. 189-250

    Abstract
    The quasi-conforming technique was introduced in the 1980’s to meet the challenge of inter-elements conforming problems and give a unified treatment of both conforming [...]

  • M. Kouhi, M. Manshadi, E. Oñate
    Aerospace Science and Technology (2014). Vol. 36, pp. 64-74, 2014

    Abstract
    Design of two-dimensional supersonic diffusers as a part of the wind tunnel is investigated in this paper. A methodology based on the mixture of try-and-error method [...]

  • C. Labra, J. Rojek, E. Oñate, F. Zárate
    Acta Geotechnica (2009). Vol. 3 (4), pp. 317-322

    Abstract
    The paper presents advances in the discrete element modelling of underground excavation processes extending modelling possibilities as well as increasing computational efficiency. [...]

  • Int. J. Numer. Meth. Fluids (2014). Vol 74 (12), pp. 919-934

    Abstract
    We propose a simple technique for improving computationally the efficiency of monolithic velocity–pressure solvers for incompressible flow problems. The idea consists [...]

  • M. Kouhi, D. Lee, G. Bugeda, E. Oñate
    Computers and Fluids (2013). Vol. 88, pp. 298-312

    Abstract
    This paper demonstrates the big influence of the control of the mesh quality in the final solution of aerodynamic shape optimization problems. It aims to study the trade-off [...]

  • Int. J. Numer. Meth. Fluids (2013). Vol. 71 (6), pp. 687-716

    Abstract
    We present an efficient technique for the solution of free surface flow problems using level set and a parallel edge‐based finite element method. An unstructured semi‐explicit [...]

  • D. Lee, G. Bugeda, J. Périaux, E. Oñate
    Computers and Fluids (2013). Vol. 80, pp. 214 - 224

    Abstract
    The paper investigates a robust optimisation for detail design of active shock control bump on a transonic Natural Laminar Flow (NLF) aerofoil using a Multi-Objective Evolutionary [...]

  • Int. J. Numer. Meth. Fluids (2012). Vol. 70' (1), pp. 1-19

    Abstract
    In this paper, we propose a computational algorithm for the solution of thermally coupled flows in subsonic regime. The formulation is based upon the compressible Navier–Stokes [...]

  • D. Lee, L. González, J. Periaux, A. Srinivas, E. Oñate
    Computers and Fluids (2011). Vol. 47 (1), pp. 189-204

    Abstract
    A number of Game Strategies (GS) have been developed in past decades. They have been used in the fields of economics, engineering, computer science and biology due to their [...]

  • Z. Tang, J. Périaux, G. Bugeda, E. Oñate
    Int. J. Numer. Meth. Fluids (2010). Vol. 64 (2), pp. 119-135

    Abstract
    In this paper, the aerodynamic shape optimization problems with uncertain operating conditions have been addressed. After a review of robust control theory and the possible [...]

  • R. Löhner, C. Yang, E. Oñate
    Int. J. Numer. Meth. Fluids (2007). Vol. 53 (8), pp 1315-1338

    Abstract
    A volume of fluid (VOF) technique has been developed and coupled with an incompressible Euler/Navier–Stokes solver operating on adaptive, unstructured grids to simulate [...]

  • Int. J. Numer. Meth. Fluids (1995). Vol. 20 (8-9), pp. 915-934

    Abstract
    This paper presents a methodology for solving shape optimization problems in the context of fluid flow problems including adaptive remeshing. The method is based on the computation [...]

  • E. Oñate, M. Manzán
    Int. J. Numer. Meth. Fluids (1999). Vol. 31 (1), pp. 203-221

    Abstract
    A procedure to derive stabilized space–time finite element methods for advective–diffusive problems is presented. The starting point is the stabilized balance [...]

  • Int. J. Numer. Meth. Fluids (1999). Vol. 30 (2), pp. 161-178

    Abstract
    This paper presents a methodology for solving shape optimization problems in the context of fluid flow problems including adaptive remeshing. The method is based on the computation [...]

  • M. Chiumenti, M. Cervera, E. Salsi, A. Zonato
    J. of Heat Transfer (2018). (preprint) Vol. 140 (8), pp. 12

    Abstract
    In this work, a novel phenomenological model is proposed to study the liquid-to-solid phase change of eutectic and hypoeutectic alloy compositions. The objective is to enhance [...]

  • N. Dialami, M. Cervera, M. Chiumenti
    Metals (2018). (preprint) Vol. 8 (3), pp. 183

    Abstract
    This work studies the metallurgical and microstructural aspects of Friction Stir Welding (FSW) in terms of grain size and microhardness. The modelling is based on the combination [...]

  • X. Lu, X. Lin, M. Chiumenti, M. Cervera, J. Li, L. Ma, L. Wei, Y. Hu, W. Huang
    Additive Manufacturing (2018). (preprint) Vol. 21, pp. 30-40

    Abstract
    A three-dimensional (3D) thermomechanical coupled model for Laser Solid Forming (LSF) of Ti-6Al-4V alloy has been calibrated through experiments of 40-layers metal [...]

  • G. Barbat, M. Cervera, M. Chiumenti
    International Journal of Fracture (2018). (preprint) Vol. 210 (1-2), pp. 45–79

    Abstract
    This paper discusses the modeling of cracking in quasi-brittle materials using isotropic and orthotropic damage constitutive laws. A mixed strain/displacement finite element [...]

  • J. Wu, M. Cervera
    Int. J. Solids and Structures (2018). (preprint) Vol. 139–140, pp. 250–269

    Abstract
    The asymmetric tensile/compressive material behavior and microcracks closure-reopening (MCR) effects exhibited by quasi-brittle solids are of significant [...]

  • M. Cervera, C. Tesei, G. Ventura
    Int. J. Solids and Structures (2017). (preprint) Vol. 135, pp. 148–171

    Abstract
    In the present paper, a new d+/d− damage model apt for quasi-brittle materials is described and its validation is carried out considering unreinforced [...]

  • N. Dialami, M. Cervera, M. Chiumenti, A. Segatori, W. Osikowicz
    Metals (2017). (preprint) Vol. 7 (11), pp. 491

    Abstract
    This work adopts a fast and accurate two-stage computational strategy for the analysis of FSW (Friction stir welding) processes using threaded cylindrical pin tools. The coupled [...]

  • N. Dialami, M. Chiumenti, M. Cervera, A. Segatori, W. Osikowicz
    Int. J. Mechanical Sciences (2017). (preprint) Vol. 133, pp. 555-567

    Abstract
    Friction is one of the main heat generation mechanisms in Friction Stir Welding (FSW). This phenomenon occurs between the pin and the workpiece as the rotating tool moves [...]

  • M. Chiumenti, E. Neiva, E. Salsi, M. Cervera, E. Badia, J. Moya, Z. Chen, C. Lee, C. Davies
    Additive Manufacturing (2017). (preprint) Vol. 18, pp. 171-185

    Abstract
    In this work a finite-element framework for the numerical simulation of the heat transfer analysis of additive manufacturing processes by powder-bed technologies, [...]

  • M. Cervera, G. Barbat, M. Chiumenti
    Computational Mechanics (2017). (preprint) Vol. 60 (5), pp. 767–796

    Abstract
    This paper discusses the finite element modeling of cracking in quasi-brittle materials. The problem is addressed via a mixed strain/displacement finite element formulation [...]

  • S. Salaustros, M. Cervera, L. Pelà
    Meccanica (2017). (preprint) Vol. 53 (7), pp. 1757–1776

    Abstract
    In-plane cyclic loading of masonry walls induces a complex failure pattern composed of multiple diagonal shear cracks, as well as flexural cracks. The realistic modelling [...]

  • S. Salaustros, L. Pelà, M. Cervera, P. Roca
    International Journal of Architectural Heritage (2017). (preprint) Vol. 12 (3), pp. 432-447

    Abstract
    Finite element macro-modeling approaches are widely used for the analysis of large-scale masonry structures. Despite their efficiency, they still face two important challenges: [...]

  • J. Wu, M. Cervera
    Materials (2017). (preprint) Vol. 10 (4), pp. 434

    Abstract
    Damage-induced strain softening is of vital importance for the modeling of localized failure in frictional-cohesive materials. This paper addresses strain localization of [...]

  • L. Benedetti, M. Cervera, M. Chiumenti
    Engineering Fracture Mechanics (2017). (preprint) Vol. 176, pp. 235–256

    Abstract
    The testing of mode III and mixed mode failure is every so often encountered in the dedicated literature of mechanical characterization of brittle and quasi-brittle [...]

  • Int. J. Mechanical Sciences (2017). (preprint) Vol. 122, pp. 215–227

    Abstract
    Pin geometry is a fundamental consideration in friction stir welding (FSW). It influences the thermal behaviour, material flow and forces during the weld and [...]

  • M. Cervera, C. Tesei
    Materials (2017). (preprint) Vol. 10 (4), pp. 433

    Abstract
    In this paper, an energy-equivalent orthotropic d+/d− damage model for cohesive-frictional materials is formulated. Two essential mechanical features are addressed, [...]

  • S. Salaustros, L. Pelà, M. Cervera, P. Roca
    Computational Mechanics (2017). (preprint) Vol. 59 (2), pp. 299–316

    Abstract
    Tracking algorithms constitute an efficient numerical technique for modelling fracture in quasi-brittle materials. They succeed in representing localized cracks in the numerical [...]

  • M. Chiumenti, X. Lin, M. Cervera, W. Lei, Y. Zheng, W. Huang
    Rapid Prototyping Journal (2017). (preprint) Vol. 23 (2), pp. 448-463

    Abstract
    In this work the numerical simulation of Additive Manufacturing (AM) processes is addressed. The numerical results are compared with the experimental campaign carried out [...]

  • International Journal of Advanced Manufacturing Technology (2017). (preprint) Vol. 88 (9), pp. 3099–3111

    Abstract
    This work describes the local–global strategy proposed for the computation of residual stresses in friction stir welding (FSW) processes. A coupling strategy between [...]

  • M. Chiumenti, M. Cervera, N. Dialami, B. Wu, L. Jinwei, C. Agelet de Saracibar
    Finite Elements in Analysis and Design (2016). (preprint) Vol. 121, pp. 118–133

    Abstract
    Electron Beam Welding (EBW) is a highly efficient and precise welding method increasingly used within the manufacturing chain and of growing importance in different industrial [...]

  • P. Roca, M. Cervera, L. Pelà
    Engineering Structures (2013). (preprint) Vol. 46, pp. 653-670

    Abstract
    From the theoretical point of view, systems composed by masonry arches or vaults would require, during construction, the simultaneous activation of all structural elements [...]

  • P. Roca, M. Cervera, G. Gariup, L. Pelà
    Archives of Comp. Meths. Engng. (2010). 17 (3), pp. 299-325

    Abstract
    A review of methods applicable to the study of masonry historical construction, encompassing both classical and advanced ones, is presented. Firstly, the paper offers a discussion [...]

  • M. Cervera, N. Lafontaine, R. Rossi, M. Chiumenti
    Computational Mechanics (2016). (Preprint) Vol. 58 (3), pp. 511–532

    Abstract
    This paper presents an explicit mixed finite element formulation to address compressible and quasi-incompressible problems in elasticity and plasticity. This implies that [...]

  • L. Benedetti, M. Cervera, M. Chiumenti
    Computers and Structures (2016). (preprint) Vol. 172, pp. 93–109

    Abstract
    This paper presents the 2D and 3D numerical analysis of pullout tests on steel anchorages in concrete blocks using standard and mixed finite elements. A novel (stabilized) [...]

  • L. Pelà, J. Bourgeois, P. Roca, M. Cervera, M. Chiumenti
    International Journal of Architectural Heritage (2016). (preprint) Vol. 10 (4), pp. 418–437

    Abstract
    This article presents the analysis of the structure of Mallorca Cathedral taking into account the influence on the structural behavior of auxiliary iron ties used during the [...]

  • J. Wu, M. Cervera
    Int. J. Solids and Structures (2016). (preprint) Vol. 88–89, pp. 227–247

    Abstract
    Aiming for the modeling of localized failure in quasi-brittle solids, this paper addresses a thermodynamically consistent plastic-damage framework and the corresponding strain [...]

  • Archives of Comp. Meths. Engng. (2017). (preprint) Vol. 24 (1), pp. 198-225

    Abstract
    This paper deals with the numerical simulation of friction stir welding (FSW) processes. FSW techniques are used in many industrial applications and particularly in the aeronautic [...]

  • Journal of Non-Newtonian Fluid Mechanics (2016). (preprint) Vol. 228, pp. 1-16

    Abstract
    This paper presents the application of a stabilized mixed pressure/velocity finite element formulation to the solution of viscoplastic non-Newtonian flows. Both Bingham and [...]

  • P. Bussetta, N. Dialami, M. Chiumenti, C. Agelet de Saracibar, M. Cervera, J. Ponthot
    Advances in Materials and Processing Technologies (2016). (preprint) Vol. 1 (3-4), pp. 275-287

    Abstract
    Friction stir welding (FSW) process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are [...]

  • S. Saloustros, L. Pelà, M. Cervera
    Engineering Fracture Mechanics (2015). (preprint) Vol. 150, pp. 96-114

    Abstract
    This paper extends the use of crack-tracking techniques within the smeared crack approach for the numerical simulation of cohesive–frictional damage on quasi-brittle [...]

  • P. Bussetta, N. Dialami, M. Chiumenti, C. Agelet de Saracibar, M. Cervera, R. Boman, J. Ponthot
    Advanced Modeling and Simulation in Engineering Sciences (2015). (preprint) Vol. 2 (27), pp. 1-19

    Abstract
    Friction stir welding process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are not melted. [...]

  • J. Wu, M. Cervera
    Journal of the Mechanics and Physics of Solids (2015). (preprint) Vol. 82, pp. 137-163

    Abstract
    This work investigates systematically traction- and stress-based approaches for the modeling of strong and regularized discontinuities induced by localized failure in [...]

  • M. Cervera, J. Wu
    Int. J. Solids and Structures (2015). (preprint) Vol. 71 (1), pp. 19-38

    Abstract
    Once strain localization occurs in softening solids, inelastic loading behavior is restricted within a narrow band while the bulk unloads elastically. Accordingly, localized [...]

  • N. Dialami, M. Chiumenti, M. Cervera, C. Agelet de Saracibar, J. Ponthot
    Int. J. of Material Forming (2015). (preprint) Vol. 8 (2), pp. 167-181

    Abstract
    This work deals with the modeling of the material flow in Friction Stir Welding (FSW) processes using particle tracing method. For the computation of particle trajectories, [...]

  • N. Lafontaine, R. Rossi, M. Cervera, M. Chiumenti
    Computational Mechanics (2015). (preprint) Vol. 55 (3), pp. 543-559

    Abstract
    Low-order finite elements face inherent limitations related to their poor convergence properties. Such difficulties typically manifest as mesh-dependent or excessively stiff [...]

  • L. Benedetti, M. Cervera, M. Chiumenti
    Computers and geotechnics (2015). (preprint) Vol. 64, pp. 32-47

    Abstract
    The development of slip lines, due to strain localization, is a common cause for failure of soil in many circumstances investigated in geotechnical engineering. Through the [...]

  • L. Pelà, M. Cervera, S. Oller, M. Chiumenti
    Engineering Fracture Mechanics (2014). (preprint) Vol. 124-125, pp. 196-216

    Abstract
    This paper presents an implicit orthotropic model based on the Continuum Damage Mechanics isotropic models. A mapping relationship is established between the behaviour of [...]

  • C. Agelet de Saracibar, M. Chiumenti, M. Cervera, N. Dialami, A. Seret
    Archives of Comp. Meths. Engng. (2014). (preprint) Vol. 21 (1), pp. 3-37

    Abstract
    This paper deals with the computational modeling and sub-grid scale stabilization of incompressibility and convection in the numerical simulation of the material flow around [...]

  • P. Bussetta, N. Dialami, R. Boman, M. Chiumenti, C. Agelet de Saracibar, M. Cervera, J. Ponthot
    Steel Research International (2014). (preprint) Vol. 85 (6), pp. 968-979

    Abstract
    Friction stir welding (FSW) process is a solid‐state joining process during which materials to be joined are not melted. As a consequence, the heat‐affected zone is smaller [...]

  • Computers and Structures (2013). (prepint) Vol. 117, pp. 48-57.

    Abstract
    This paper describes features of a fully coupled thermo-mechanical model for Friction Stir Welding (FSW) simulation. An apropos kinematic setting for different zones of the [...]

  • L. Pelà, M. Cervera, P. Roca
    Construction and Building Materials (2013). (preprint) Vol. 41, pp. 957-967.

    Abstract
    This paper presents a numerical model for nonlinear analysis of masonry structural elements based on Continuum Damage Mechanics. The material is described at the macro-level, [...]

  • P. Roca, M. Cervera, L. Pelà, R. Clemente, M. Chiumenti
    The Open Civil Engineering Journal (2012). Vol. 6 (Suppl. 1-M7), pp. 188-199.

    Abstract
    This paper presents a continuum model for the simulation of the viscous effects and the long-term damage accumulation in masonry structures. The rheological model is based [...]

  • M. Cervera, L. Pelà, R. Clemente, P. Roca
    Engineering Fracture Mechanics (2010). Vol. 77 (13), pp. 2431-2450.

    Abstract
    This work presents a procedure to simulate the growth and propagation of localized tensile cracks on quasi-brittle materials. The so-called smeared damage approach, which [...]

  • M. Cervera, M. Chiumenti
    Int. J. Solids and Structures (2009). Vol. 46 (17), pp. 3301-3312.

    Abstract
    This paper studies the phenomenon of structural size effect and strain localization in J2 plasticity. Size effect is here understood as the change in the response of a given [...]

  • J. Heat Transfer (2008). Vol. 130 (6), 10 pp.

    Abstract
    The paper shows the intrinsic difficulties found in the numerical simulation of industrial casting processes using finite element (FE) analysis. Up until now, uncoupled pure [...]

  • Computer Methods in Material Science (2006). Vol. 6 (1-2), pp. 15-25

    Abstract
    In this paper, current developments on the coupled thermomechanical computational simulation of metal casting processes are presented A thermodynamically consistent constitutive [...]

  • M. Cervera, M. Chiumenti
    Int. J. Numer. Anal. Meth. Geomech. (2006). Vol. 30 (12), pp. 1173-1199.

    Abstract
    This paper briefly reviews the formulations used over the last 40 years for the solution of problems involving tensile cracking, with both the discrete and the smeared crack [...]

  • R. Faria, M. Cervera, J. Oliver
    Journal of Structural Engineering (2004). 130 (12), pp. 1997-2005.

    Abstract
    A constitutive model devised for the analysis of concrete structures, and suitable for generic two- or three-dimensional applications, is presented and validated. For plain [...]

  • M. Chiumenti, Q. Valverde, C. Agelet de Saracibar, M. Cervera
    International Journal of Plasticity (2004). 20 (8-9), pp. 1487-1504

    Abstract
    In this paper, a stabilized finite element method to deal with incompressibility in solid mechanics is presented. Both elastic and J2-plastic constitutive behavior have been [...]

  • Int. J. Numer. Anal. Meth. Geomech. (2004). 28 (5), pp. 373-393.

    Abstract
    This paper exploits the concept of stabilization techniques to improve the behaviour of mixed linear/linear simplicial elements (triangles and tetrahedra) in incompressible [...]

  • M. Cervera, R. Faria, T. Prato, J. Oliver
    Computers and Structures (2002). Vol. 80 (18–19), pp. 1511-1521

    Abstract
    A numerical model that accounts for the hydration and aging phenomena during the early ages of concrete curing is presented in a format suitable for a finite element implementation. [...]

  • International Journal of Plasticity (2001). 17 (12), pp. 1565-1622.

    Abstract
    This paper deals with a thermodynamically consistent numerical formulation for coupled thermoplastic problems including phase-change phenomena and frictional contact. The [...]

  • M. Cervera, T. Prato, J. Oliver
    Journal of Structural Engineering (2000). 126 (9), pp. 1062-1068

    Abstract
    The increasing number of roller compacted concrete (RCC) dams being built around the world demands accurate methodologies for the realistic short- and long-term evaluations [...]

  • M. Cervera, J. Oliver, T. Prato
    Journal of Structural Engineering (2000). 126 (9), pp. 1053-1060

    Abstract
    The increasing number of roller compacted concrete (RCC) dams being built around the world demands accurate methodologies for the realistic short- and long-term evaluations [...]

  • M. Cervera, J. Oliver, T. Prato
    Journal of Engineering Mechanics (1999). Vol. 125 (9), pp. 1028-1038

    Abstract
    In this work a coupled thermo-chemo-mechanical model for the behavior of concrete at early ages is proposed. This paper presents the formulation and assessment of the mechanical [...]

  • M. Cervera, T. Prato, J. Oliver
    Journal of Engineering Mechanics (1999). Vol. 125 (9), pp. 1018-1027

    Abstract
    In this work a coupled thermo-chemo-mechanical model for the behavior of concrete at early ages is proposed. The model allows simulation of the observed phenomena of hydration, [...]

  • M. Cervera, O. Manzoli, J. Oliver
    International Journal of Plasticity (1999). Vol. 15 (3), pp. 319-351

    Abstract
    The paper presents the Strong Discontinuity Approach for the analysis and simulation of strong discontinuities in solids using continuum plasticity models. Kinematics [...]

  • International Journal of Plasticity (1999). Vol. 15 (1), pp. 1-34

    Abstract
    This paper deals with a numerical formulation for coupled thermoplastic problems including phase-change phenomena. The final goal is to get an accurate, efficient and robust [...]

  • G. Bugeda, M. Cervera, G. Lombera
    Rapid Prototyping Journal (1999). Vol. 5 (1), pp. 21-26

    Abstract
    A finite element model has been developed for the 3D simulation of the sintering of a single track during a selective laser sintering process (SLS). The model takes into account [...]

  • R. Faria, M. Cervera, J. Oliver
    Int. J. Solids and Structures (1998). Vol. 35 (14), pp. 1533-1558

    Abstract
    Within the framework of continuum damage mechanics, a new constitutive damage model for massive concrete is presented, mainly intended for the seismic analysis of gravity [...]

  • M. Cervera, O. Manzoli, J. Oliver
    Engineering Computations (1996). Vol. 25 (9), pp. 987-1010.

    Abstract
    In this paper a rate‐dependent isotropic damage model developed for the numerical analysis of concrete dams subjected to seismic excitation is presented. The model is shown [...]

  • M. Cervera, R. Codina, M. Galindo
    Engineering Computations (1996). Vol. 13 (6), pp. 4-30

    Abstract
    Outlines a general methodology for the solution of the system of algebraic equations arising from the discretization of the field equations governing coupled problems. Considers [...]

  • M. Cervera, R. Faria, J. Oliver
    Earthquake Engineering Structural Dynamics (1995). Vol. 24 (9), pp. 1125-1245

    Abstract
    In this paper a general methodology for the analysis of large concrete dams subjected to seismic excitation is outlined. It is valid both for gravity dams (2D representation) [...]

  • M. Cervera, M. Galindo, J. Oliver
    Dam Engng. (1992). Vol. 3 (1), pp. 1-22.

    Abstract
    The paper presents the computational model developed to study an existing large gravity dam suffering from observed "pathological behavior" resulting concrete hydration. [...]

  • M. Cervera, Y. Liu, E. Hinton
    Engineering Computations (1986). Vol. 3 (3), pp.235-242

    Abstract
    A hierarchically preconditioned conjugate gradient (PCG) method for finite element analysis is presented. Its use is demonstrated for the difficult problem of the non‐linear [...]

  • M. Cervera, E. Hinton, O. Hassan
    Computers and Structures (1987). Vol. 25 (6), pp. 845-869

    Abstract
    This paper describes an efficient and accurate, 3-D finite element model which may be adopted in the nonlinear analysis of reinforced concerete plate and shell structures. [...]

  • M. Cervera, M. Chiumenti, L. Benedetti, R. Codina
    Comput. Methods Appl. Mech. Engrg., (2015). (preprint) Vol. 285, pp. 752-775

    Abstract
    This paper presents the application of a stabilized mixed strain/displacement finite element formulation for the solution of nonlinear solid mechanics problems involving compressible [...]

  • M. Chiumenti, M. Cervera, R. Codina
    Comput. Methods Appl. Mech. Engrg., (2015). (preprint) Vol. 238, pp. 1095-1116

    Abstract
    In previous works, the authors have presented the stabilized mixed displacement/pressure formulation to deal with the incompressibility constraint. More recently, [...]

  • Comput. Methods Appl. Mech. Engrg., (2013). (preprint) Vol. 254, pp. 353-369

    Abstract
    This work describes the formulation adopted for the numerical simulation of the friction stir welding (FSW) process. FSW is a solid-state joining process (the metal is not [...]

  • M. Cervera, M. Chiumenti, D. Di Capua
    Comput. Methods Appl. Mech. Engrg., (2012). Vol. 241-244, pp. 206-224

    Abstract
    This paper studies the phenomenon of strain bifurcation and localization in J2plasticity under plane stress and plane strain conditions. Necessary conditions for the outcome [...]

  • L. Pelà, M. Cervera, P. Roca
    Comput. Methods Appl. Mech. Engrg., (2011). Vol. 200 (9-12), pp. 917-930

    Abstract
    This paper contributes to the formulation of continuum damage models for orthotropic materials under plane stress conditions. Two stress transformation tensors, related to [...]

  • M. Cervera, M. Chiumenti, R. Codina
    Comput. Methods Appl. Mech. Engrg., (2010). Vol. 199 (37-40), pp. 2571-2589

    Abstract
    This paper deals with the question of strain localization associated with materials which exhibit softening due to tensile straining. A standard local isotropic Rankine damage [...]

  • M. Cervera, M. Chiumenti, R. Codina
    Comput. Methods Appl. Mech. Engrg., (2010). Vol. 199 (37-40), pp. 2559-2570

    Abstract
    This paper exploits the concept of stabilized finite element methods to formulate stable mixed stress/displacement and strain/displacement finite elements for the solution [...]

  • M. Chiumenti, M. Cervera, A. Salmi, C. Agelet de Saracibar, N. Dialami, K. Matsui
    Comput. Methods Appl. Mech. Engrg., (2010). Vol. 199 (37-40), pp. 2343-2359

    Abstract
    This paper describes the formulation adopted for the numerical simulation of the shaped metal deposition process (SMD) and the experimental work carried out at ITP Industry [...]

  • Comput. Methods Appl. Mech. Engrg., (2008). Vol. 197 (17-18), 1603-1619

    Abstract
    This paper recovers the original spirit of the continuous crack approaches, where displacements jumps across the crack are smeared over the affected elements and the behaviour [...]

  • M. Cervera, M. Chiumenti
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 196 (1-3), pp. 304-320

    Abstract
    This paper describes a procedure for the solution of problems involving tensile cracking using the so-called smeared crack approach, that is, standard finite elements [...]

  • C. Agelet de Saracibar, M. Chiumenti, Q. Valverde, M. Cervera
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195 (9-12), pp. 1224-1251

    Abstract
    The use of stabilization methods is becoming an increasingly well-accepted technique due to their success in dealing with numerous numerical pathologies that arise in a variety [...]

  • M. Cervera, M. Chiumenti, Q. Valverde, C. Agelet de Saracibar
    Comput. Methods Appl. Mech. Engrg., (2003). Vol. 192 (49-50), pp. 5249-5263

    Abstract
    This paper exploits the concept of orthogonal sub-grid scales to stabilize the behaviour of mixed linear/linear simplicial elements (triangles and tetrahedra) in incompressible [...]

  • M. Chiumenti, Q. Valverde, C. Agelet de Saracibar, M. Cervera
    Comput. Methods Appl. Mech. Engrg., (2002). Vol. 191 (46), pp. 5253-5264

    Abstract
    In this paper a stabilized finite element method to deal with incompressibility in solid mechanics is presented. A mixed formulation involving pressure and displacement fields [...]

  • M. Cervera, M. Chiumenti, R. Codina
    Int. J. Numer. Meth. Engng. (2011). Vol. 87 (10), pp. 962-987

    Abstract
    The paper addresses the problem of tensile and mixed‐mode cracking within the so‐called smeared crack approach. Because lack of point‐wise convergence on stresses is [...]

  • Int. J. Numer. Meth. Engng. (2008). Vol. 76 (12), pp. 1930-1954

    Abstract
    Traditional smeared orthotropic models display an unacceptable dependence of the solution on the alignment of the mesh, which usually manifests as stress locking. A solution [...]

  • Int. J. Numer. Meth. Engng. (1999). Vol. 46 (9), pp. 1575-1591

    Abstract
    The paper presents an up‐to‐date finite element numerical model for fully coupled thermo‐mechanical problems, focussing in the simulation of solidification processes [...]

  • B. Suárez, E. Oñate
    Anales de Ingeniería Mecánica (1984). Vol. 2 (1), pp. 59-68

    Abstract
    Se representa una formulación por elementos finitos que permite simular la distribución transitoria de presiones y caudales del gas en redes urbanas. Esta formulación, [...]

  • Comp. Part. Mech (2017). Vol. 4 (3), pp. 249-249

    Abstract
    Particle-based methods in which each material particle is followed in a Lagrangian manner have been used successfully in the last years for different applications. One [...]

  • R. Aubry, R. Lohner, E. Oñate, S. Idelsohn
    American Institute of Aeronautics and Astronautics Paper (AIAA) (2007). 2007-0715

    Abstract
    An incompressible Finite Element Lagrangian code is presented and validated against classical experimental and numerical Eulerian results. The main distinction between an [...]

  • Fire Technology (2018). Vol. 54 (6), pp. 1783–1805

    Abstract
    The tendency of the polymers to melt and drip when they are exposed to external heat source play a very important role in the ignition and the spread of fire. Numerical simulation [...]

  • C. R. Mecanique (2018). Vol. 346 (7), pp. 539-555

    Abstract
    Highly concentrated moving nonlinearities are extremely difficult to solve numerically. The Selective Laser Melting Additive Manufacturing process [...]

  • Adv. Model. and Simul. in Eng. Sci. (2018). Vol. 5, art. 28

    Abstract
    In this paper we present a collection of techniques used to formulate a projection-based reduced order model (ROM) for zero Mach limit thermally coupled Navier–Stokes [...]

  • A. Limache, S. Idelsohn
    Adv. Model. and Simul. in Eng. Sci. (2016). Vol. 3, art 13

    Abstract
    Discretization processes leading to numerical schemes sometimes produce undesirable effects. One potentially serious problem is that a discretization may produce the loss [...]

  • Adv. Model. and Simul. in Eng. Sci. (2016). Vol. 3, art 7

    Abstract
    Inhomogeneous essential boundary conditions must be carefully treated in the formulation of Reduced Order Models (ROMs) for non-linear problems. In order to investigate this [...]

  • A. Jarauta, M. Secanell, J. Pons Prats, P. Ryzhakov, S. Idelsohn, E. Oñate
    Int. J. Hydrogen Energy (2015). Vol. 40 (15), pp. 5375-5383

    Abstract
    Water management is one of the key factors in Proton Exchange Fuel Cell (PEFC) performance. The water produced within the fuel cell is evacuated through the gas channels, [...]

  • S. Costarelli, M. Storti, R. Paz, L. Dalcin, S. Idelsohn
    Cluster computing (2014). Vol. 17 (2), pp. 243-254

    Abstract
    In the present work an implementation of the Back and Forth Error Compensation and Correction (BFECC) algorithm specially suited for running on General-Purpose Graphics Processing [...]

  • J. Gimenez, N. Nigro, S. Idelsohn
    Comp. Part. Mech. (2014). Vol. 1 (1), pp. 103-116

    Abstract
    This paper presents a high performance implementation for the particle-mesh based method called particle finite element method two (PFEM-2). It consists of a material derivative [...]

  • Mathematical Models and Methods in Applied Sciences (2013). Vol. 23 (2), pp. 339–367

    Abstract
    We propose a fully Lagrangian monolithic system for the simulation of the underwater implosion of cylindrical aluminum containers. A variationally stabilized form of the Lagrangian [...]

  • J. Gimenez, D. Ramajo, S. Damián, N. Nigro, S. Idelsohn
    Comp. Part. Mech. (2016). Vol. 4 (3), pp. 251-267

    Abstract
    The latest generation of the particle finite element method (PFEM-2) is a numerical method based on the Lagrangian formulation of the equations, which presents advantages [...]

  • A. Geyer, J. Phillips, M. Mier-Torrecilla, S. Idelsohn, E. Oñate
    Experiments in Fluids (2011). Vol 52 (1), pp. 261-257

    Abstract
    In this paper we investigate experimentally the injection of a negatively buoyant jet into a homogenous immiscible ambient fluid. Experiments are carried out by injecting [...]

  • Acta Geotechnica (2006). Vol. 1 (4), pp. 237-252

    Abstract
    We present a general formulation for modeling bed erosion in free surface flows using the particle finite element method (PFEM). The key feature of the PFEM is the use of [...]

  • Computers and Fluids (2014). Vol. 89, pp. 53-65

    Abstract
    A comparative assessment of the Finite Point Method (FPM) is presented. Using a wing-fuselage configuration under transonic inviscid flow conditions as reference test case, [...]

  • R. Rossi, F. Mossaiby, S. Idelsohn
    Computers & Fluids (2013). Vol. 81, pp. 134-144

    Abstract
    The rise of GPUs in modern high-performance systems increases the interest in porting portion of codes to such hardware. The current paper aims to explore the performance [...]

  • P. Dadvand, R. Rossi, M. Gil, X. Martorell, J. Cotela, E. Juanpere, S. Idelsohn, E. Oñate
    Computers and Fluids (2013). Vol. 80, pp. 301-309

    Abstract
    Creating a highly parallelizable code is a challenge specially for Distributed Memory Machines (DMMs). Moreover, algorithms and data structures suitable for these platforms [...]

  • R. Rossi, J. Cotela, N. Lafontaine, P. Dadvand, S. Idelsohn
    Computers and Fluids (2013). Vol. 80, pp. 342-355

    Abstract
    The present article describes a simple element-driven strategy for the conforming refinement of simplicial finite element meshes in a distributed environment. The proposed [...]

  • M. Storti, R. Paz, L. Dalcin, S. Costarelli, S. Idelsohn
    Computers and Fluids (2013). Vol. 74, pp. 44-57

    Abstract
    Graphic processing units have received much attention in last years. Compute-intensive algorithms operating on multidimensional arrays that have nearest neighbor dependency [...]

  • Computers and Fluids (2007). Vol. 36 (1), pp. 27-38

    Abstract
    The Particle Finite Element Method (PFEM) is a well established numerical method [Aubry R, Idelsohn SR, Oñate E, Particle finite element method in fluid mechanics [...]

  • P. Becker, S. Idelsohn
    Acta Geotechnica (2016). Vol. 11 (3), pp. 643-657

    Abstract
    We present an approach for the simulation of landslides using the Particle Finite Element Method of the second generation. In this work, the multiphase nature (granular phase [...]

  • Int. J. Computational Fluid Dynamics (2002). Vol. 16 (4), pp. 283-295

    Abstract
    The aim of this paper is to describe the methodology followed in order to determine the viscous effects of a uniform wind on the blades of small horizontal-axis wind turbines [...]

  • R. Löhner, C. Yang, E. Oñate, S. Idelsohn
    Applied Numerical Mathematics (1999). Vol. 31 (3), pp. 271-293

    Abstract
    An unstructured grid-based, parallel-free surface solver is presented. The overall scheme combines a finite-element, equal-order, projection-type 3-D incompressible flow solver [...]

  • J. Gimenez, H. Aguerre, S. Idelsohn, N. Nigro
    Journal of Computational Physics (2018). Vol. 380, pp. 295-310

    Abstract
      This work presents a novel proposal of a second-order accurate (in time and space) particle-based method for solving transport equations including incompressible [...]

  • Journal of Computational Physics (1998). Vol. 146 (2), pp 570-602

    Abstract
    An absorbing boundary condition for the ship wave resistance problem is presented. In contrast to the Dawson-like methods, it avoids the use of numerical viscosities in the [...]

  • J. Marti, E. Ortega, S. Idelsohn
    Int. J. of Num. Meths. for Heat and Fluid Flow (2017). Vol. 27 (8), pp.1748-1764

    Abstract
    Purpose   The purpose of this paper is to propose a new elemental enrichment technique to improve the accuracy of the simulations of thermal problems [...]

  • C. Felippa, E. Oñate, S. Idelsohn
    Archives of Comp. Meths. Engng. (2017). Vol. 25 (4), pp. 919–963

    Abstract
    This is part of an article series on a variational framework for continuum mechanics based on the Finite Increment Calculus (FIC). The formulation utilizes high order derivatives [...]

  • S. Idelsohn, J. Gimenez, N. Nigro
    Int. J. Numer. Meth. Fluids (2018). Vol. 86 (12), pp. 750–769

    Abstract
    In a previous paper, the authors presented an elemental enriched space to be used in a finite‐element framework (EFEM) capable of reproducing kinks and jumps in an unknown [...]

  • S. Idelsohn, J. Marti, P. Becker, E. Oñate
    Int. J. Numer. Meth. Fluids (2014). Vol. 75 (9), pp. 621-644

    Abstract
    Multifluids are those fluids in which their physical properties (viscosity or density) vary internally and abruptly forming internal interfaces that introduce a large nonlinearity [...]

  • Int. J. Numer. Meth. Fluids (2014). Vol. 74 (10), pp. 732-748

    Abstract
    In this work, the finite point method is applied to the solution of high‐Reynolds compressible viscous flows. The aim is to explore this important field of applications [...]

  • Int. J. Numer. Meth. Fluids (2013). Vol. 73 (4), pp. 323-343

    Abstract
    A finite point method for solving compressible flow problems involving moving boundaries and adaptivity is presented. The numerical methodology is based on an upwind‐biased [...]

  • Int. J. Numer. Meth. Fluids (2013). Vol. 72 (12), pp. 1219-1243

    Abstract
    In this paper, we present an explicit formulation for reduced‐order models of the stabilized finite element approximation of the incompressible Navier–Stokes equations. [...]

  • Int. J. Numer. Meth. Fluids (2011). Vol. 70 (7), pp. 829-850

    Abstract
    In this work, a new enrichment space to accommodate jumps in the pressure field at immersed interfaces in finite element formulations, is proposed. The new enrichment adds [...]

  • M. Mier-Torrecilla, A. Geyer, J. Phillips, S. Idelsohn, E. Oñate
    Int. J. Numer. Meth. Fluids (2011). Vol. 69 (5), pp. 1016-1030

    Abstract
    Negatively buoyant jets consist in a dense fluid injected vertically upward into a lighter ambient fluid. The numerical simulation of this kind of buoyancy‐driven flows [...]

  • Int. J. Numer. Meth. Fluids (2010). Vol. 65 (1-3), pp. 106-134

    Abstract
    We present a collection of stabilized finite element (FE) methods derived via first‐ and second‐order finite calculus (FIC) procedures. It is shown that several well known [...]

  • Int. J. Numer. Meth. Fluids (2008). Vol. 60 (9), pp. 937-971

    Abstract
    The finite point method (FPM) is a meshless technique, which is based on both, a weighted least‐squares numerical approximation on local clouds of points and a collocation [...]

  • Int. J. Numer. Meth. Fluids (2007). Vol. 54 (6-8), pp. 639-664

    Abstract
    The Navier–Stokes equations written in Laplace form are often the starting point of many numerical methods for the simulation of viscous flows. Imposing the natural [...]

  • Hormigón y Acero (2018). (prepint) 69, Supl 1, pp. 53-69

    Abstract
    This paper presents the basic concepts and application of the strategy that combines finite element methods (FEM) and discrete elements (DEM)for the study of the propagation [...]

  • S. Idelsohn, N. Nigro, J. Gimenez, R. Rossi, J. Marti
    Engineering Computations (2013). Vol. 30 (2), pp. 197-222

    Abstract
    Purpose   – The purpose of this paper is to highlight the possibilities of a novel Lagrangian formulation in dealing with the solution [...]

  • J. D'Elía, M. Storti, S. Idelsohn
    Advances in Engineering Software (2000). Vol. 31 (5), pp. 339-346

    Abstract
    A weak form to compute the dipolar and monopolar surface gradients, related to a low-order panel method, is shown. The flow problem is formulated by means of a three-dimensional [...]

  • J. D'Elía, M. Storti, S. Idelsohn
    Advances in Engineering Software (2000). Vol. 31 (5), pp. 347-353

    Abstract
    A closed form for the computation of the dipolar and monopolar influence coefficients related to a low-order panel method is shown. The flow problem is formulated by means [...]

  • J. Appl. Mech (2003). Vol. 70 (1), pp. 18-26

    Abstract
    A stabilized semi-implicit fractional step algorithm based on the finite element method for solving ship wave problems using unstructured meshes is presented. The stabilized [...]

  • Comput. Methods Appl. Mech. Engrg., (2017). Vol. 315, pp. 1080-1097

    Abstract
    We propose here a displacement-based updated Lagrangian fluid model developed to facilitate a monolithic coupling with a wide range of structural elements [...]

  • F. Mossaiby, R. Rossi, P. Dadvand, S. Idelsohn
    Int. J. Numer. Meth. Engng. (2012). Vol. 89 (13), pp. 1635-1651

    Abstract
    The solution of problems in computational fluid dynamics (CFD) represents a classical field for the application of advanced numerical methods. Many different approaches were [...]

  • E. Oñate, S. Idelsohn, O. Zienkiewicz, R. Taylor
    Int. J. Numer. Meth. Engng. (1996). Vol. 39 (22), pp. 3839-3866

    Abstract
    The paper presents a fully meshless procedure fo solving partial differential equations. The approach termed generically the ‘finite point method’ is based on [...]

  • Comput. Methods Appl. Mech. Engrg., (2017). Vol. 326, pp. 739-756

    Abstract
    Problems characterised by steep moving gradients are challenging for any numerical technique and even more for the successful formulation of Reduced Order Models (ROMs). [...]

  • S. Costarelli, L. Garelli, M. Cruchaga, M. Storti, R. Ausensi, S. Idelsohn
    Comput. Methods Appl. Mech. Engrg., (2016). Vol. 300, pp. 106-128

    Abstract
    A Navier–Stokes solver based on Cartesian structured finite volume discretization with embedded bodies is presented. Fluid structure interaction with [...]

  • Comput. Methods Appl. Mech. Engrg., (2015). Vol. 291; pp. 173-196

    Abstract
    In this work the Reduced-Order Subscales for Proper Orthogonal Decomposition models are presented. The basic idea consists in splitting the full-order solution into the part [...]

  • Comput. Methods Appl. Mech. Engrg., (2014). Vol. 274, pp. 237-263

    Abstract
    The simulation of engineering problems is quite often a complex task that can be time consuming. In this context, the use of Hyper Reduced Order Models (HROMs) is a promising [...]

  • Comput. Methods Appl. Mech. Engrg., (2013). Vol. 267, pp. 23-42

    Abstract
    In this work, a domain decomposition strategy for non-linear hyper-reduced-order models is presented. The basic idea consists of restricting the reduced-order basis functions [...]

  • J. Oliver, E. Oñate
    Revista de Obras Públicas (1983). Vol. 130 (3218), pp. 747-763

    Abstract
    La ejecución de emisarios submarinos para saneamiento y la instalación de tuberías para transporte de productos petrolíferos son ejemplos de la [...]

  • F. Zarate, J. Gonzalez, J. Miquel, R. Lohner, E. Oñate
    Underground Space (2018). (prepint)

    Abstract
    We present recent developments in the coupling of the finite element method (FEM) and the discrete element method (DEM) for analysis of rock blasting operations in tunnels. [...]

  • Comp. Part. Mech (2018). (prepint) Vol. 5 (3), pp. 355-373

    Abstract
    In this paper we analyze the capabilities of two numerical techniques based on DEM and FEM-DEM approaches for the simulation of fracture in shale rock caused by a pulse of [...]

  • Comp. Part. Mech (2018). (prepint) Vol. 5 (3) , pp. 411-420

    Abstract
    This paper extends to three dimensions (3D) the computational technique developed by the authors in 2D for predicting the onset and evolution of fracture in a finite element [...]

  • Int. J. Numer. Meth. Biomed. Engng (2010). Vol. 26 (10), pp. 1313-1330

    Abstract
    The purpose of this paper is to put in evidence that the fractional‐step method (FSM) used to solve the incompressible transient Euler and Navier–Stokes equations [...]

  • Computational Materials Science (2005). Vol. 32 (2), pp. 175-195

    Abstract
    In this paper, a thermo-mechanical constitutive model for the predictions of fatigue in structures using the finite element method is formulated. The model is based on the [...]

  • Int. J. Computational Fluid Dynamics (2002). Vol. 16 (4), pp. 263-275

    Abstract
    A Lagrangian-type panel method in the time domain is proposed for potential flows with a moving free surface. After a spatial semi-discretization with a low-order scheme, [...]

  • J. Oliver, E. Oñate
    Journal of Pipelines (1985). Vol. 5 (1), pp. 15-35

    Abstract
    In this paper a finite element formulation for the deformation analysis of submarine pipelines during laying operations is presented. The formation allows for large displacement/rotations [...]

  • Computing and Visualization in Science (2000). Vol. 3 (1), pp. 67-75

    Abstract
    A stabilized finite point method (FPM) for the meshless analysis of incompressible fluid flow problems is presented. The stabilization approach is based in the finite increment [...]

  • Computing Systems in Engineering (1994). Vol. 5 (1), pp. 91-102

    Abstract
    This work presents a methodology based on the use of adaptive mesh refinement (AMR) techniques in the context of shape optimization problems analyzed by the Finite Element [...]

  • Int. J. of Vehicle Design (2005). Vol. 39 (1-2), pp. 110–124

    Abstract
    An important concern in sheet stamping is the risk of obtaining brittle final products that can be affected by fracture. Monte Carlo simulations presented herein show that [...]

  • E. Oñate, O. Zienkiewicz
    Int. J. Mechanical Sciences (1983). Vol. 25 (5), pp. 305-335

    Abstract
    A finite element method to analyse large plastic deformations of thin sheets of metal is presented. The formulation is based on an extension of the general viscoplastic flow [...]

  • Rapid Prototyping Journal (1995). Vol. 1 (2), pp. 13-23

    Abstract
    Stereolithography (SLA) is one of the most important techniques used in rapid prototyping processes. It has a great industrial interest because it allows for dramatic time [...]

  • International Journal of Forming Processes (2002). Vol. 5 (2-3-4), pp. 493-503

    Abstract
    The scatter in the fatigue life of the metallic structures seems to be mainly caused by internal defects of the material (porosity, inclusions as oxide films and carbon layers, [...]

  • S. Oller, E. Oñate, J. Oliver, J. Lubliner
    Engineering Fracture Mechanics (1990). Vol. 35 (1-2-3), pp. 219-231

    Abstract
    In this paper a plastic damage model for nonlinear finite element analysis of concrete is presented. The model is based on standard plasticity theory for frictional [...]

  • M. Cervera, J. Oliver, E. Herrero, E. Oñate
    Engineering Fracture Mechanics (1990). Vol. 35 (1-3), pp. 573-585

    Abstract
    The paper presents a computational model for the analysis of large concrete gravity dams subjected to severe damage due to internal actions. It has been observed in several [...]

  • R. Codina, C. Morton, E. Oñate, O. Soto
    Int. J. of Num. Meths. for Heat and Fluid Flow (2000). Vol. 10 (5-6), pp. 616-633

    Abstract
    Presents a numerical strategy for the aerodynamic analysis of large buildings, with an application to the simulation of the air flow within a telescope building. The finite [...]

  • R. Codina, U. Schäfer, E. Oñate
    Int. J. of Num. Meths. for Heat and Fluid Flow (1994). Vol. 4 (1), pp. 291-310

    Abstract
    In this paper we consider several aspects related to the application of the pseudo‐concentration techniques to the simulation of mould filling processes. We discuss, in [...]

  • Hormigón y Acero (1977). Vol. 124, pp. 53-85

    Abstract
    Se presenta el análisis general de estructuras formadas por un ensamblaje de placas y vigas y con sección transversal constante, mediante una combinación [...]

  • F. Flores, E. Oñate
    Finite Elements in Analysis and Design (2011). Vol. 47 (9), pp. 982-990

    Abstract
    This paper presents a formulation for analysis of thin elastic membranes using a rotation-free shell element within an explicit time integration strategy. The applications [...]

  • R. Löhner, E. Oñate
    Finite Elements in Analysis and Design (2010). Vol. 46 (1-2), pp. 140-151

    Abstract
    A review is given of advancing front techniques for filling space with arbitrary separated objects. Over the last decade, these techniques have reached a considerable degree [...]

  • Finite Elements in Analysis and Design (2009). Vol. 45 (6-7), pp. 395-405

    Abstract
    A new methodology for the geometrically nonlinear analysis of orthotropic membrane structures using triangular finite elements is presented. The approach is based on writing [...]

  • J. Rojek, O. Zienkiewicz, E. Oñate, E. Postek
    Journal of Materials Processing Technology (2001). Vol. 119, pp. 41-47

    Abstract
    This paper presents some advances of finite element explicit formulation for simulation of metal forming processes. Because of their computational efficiency, finite element [...]

  • J. Rojek, E. Oñate, E. Postek
    Journal of Materials Processing Technology (1998). Vols. 80-81, pp. 620-627

    Abstract
    This paper presents the application of an explicit dynamic finite element code for simulation of metal forming processes, of both sheet and bulk forming. The experiences [...]

  • J. Rojek, J. Jovicevic, E. Oñate
    Journal of Materials Processing Technology (1996). Vol. 60 (1-4), pp. 243-247

    Abstract
    The paper is aimed to present industrial applications of sheet stamping simulation using new finite element formulations developed in the International Center for Numerical [...]

  • E. Oñate, J. Rojek, C. Garino
    Journal of Materials Processing Technology (1995). Vol. 50 (1-4), pp. 17-38

    Abstract
    This paper describes the objectives and current status of the research project NUMISTAMP currently under development at the International Center for Numerical Methods in Engineering [...]