• E. Oñate, F. Zarate, M. Celigueta, J. González, J. Miquel, J. Carbonell, F. Arrufat, S. Latorre, M. Santasusana
    Eugenio Oñate's Research Reports (2019).

    Abstract
    In this chapter we present recent advances in the Discrete Element Method (DEM) and in the coupling of the DEM with the Finite Element Method (FEM) for solving a variety of [...]

  • E. Oñate, A. Franci, J. Carbonell
    (2014). Research Report, Nº PI406

    Abstract
    In this chapter we present recent advances in the Discrete Element Method (DEM) and in the coupling of the DEM with the Finite Element Method (FEM) for solving a variety of [...]

  • A. Eijo, E. Oñate, S. Oller
    (2012). Research Report, Nº PI378

    Abstract
    A new bilinear 4-noded quadrilateral element (called QLRZ) for the analysis of composite laminated and sandwich plates/shells based on the refined zigzag theory (RZT) proposed [...]

  • E. Oñate, C. Labra, F. Zárate, J. Rojek
    (2012). Research Report, Nº PI373

    Abstract
    We present a new computational model for predicting the effect of blast loading on structures. The model is based in the adaptive coupling of the finite element method (FEM) [...]

  • E. Oñate
    (2012). Research Report, Nº PI386

    Abstract
    En este trabajo se analizan algunas de las razones que dificultan y favorecen la transferencia de los resultados de la investigación que se desarrolla en entornos científicos [...]

  • F. Salazar, R. Morán, R. Rossi, E. Oñate
    (2011). Research Report, Nº PI369

    Abstract
    Current paper focuses on the analysis of radial gated spillways, which are analyzed by the solution of a numerical model. The Oliana Dam study case is considered and the discharge [...]

  • N. Lafontaine, X. Wang, K. Huang, M. Yuan, E. Oñate
    (2013). Research Report, Nº PI399

    Abstract
    In this work we introduced and implemented the AL method in NOLM program. Basically the actual implementation in NOLM is based in the work proposed by Lam and Morley (1992) [...]

  • E. Oñate
    (2011). Research Report, Nº PI360

    Abstract
    The paper presents an overview of the advances in recent years on the finite element method (FEM) and on particle-based methods for the simulation of industrial metal forming [...]

  • E. Oñate, S. Idelsohn, F. Pin, R. Aubry
    (2004). Research Report, Nº PI243

    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 [...]

  • E. Oñate, A. Franci, J. Carbonell
    (2014). Research Report, Nº PI403

    Abstract
    We present a Lagrangian formulation for coupled thermal analysis of quasi and fully incompressible flows and fluid-structure interaction (FSI) problems that has excellent [...]

  • E. Oñate, M. Celigueta, S. Idelsohn, F. Salazar, A. Larese, R. Rossi, B. Suárez, R. Morán
    (2012). Research Report, Nº PI374

    Abstract
    We present some developments in the Particle Finite Element Method (PFEM) for analysis of coupled problems in mechanics involving fluid-soil-structure interaction (FSSI). [...]

  • M. Mier-Torrecilla, S. Idelsohn, E. Oñate
    Int. J. Numer. Meth. Fluids (2010). Vol. 67 (11), pp. 1516-1539

    Abstract
    In this work we extend the Particle Finite Element Method (PFEM) to multi-fluid flow problems with the aim of exploiting the fact that Lagrangian methods are specially well [...]

  • J. Mora, R. Otín, P. Dadvand, E. Escolano, M. Pasenau, E. Oñate
    (2005). Research Report, Nº PI273

    Abstract
    Computational electromagnetism requires a wide range of numerical methods depending on the application, the topology of the geometry, the frequency and the quality of the [...]

  • E. Oñate, F. Flores
    (2003). Research Report, Nº PI241

    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
    (2004). Research Report, Nº PI264

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

  • E. Ortega, E. Oñate, S. Idelsohn
    (2011). Research Report, Nº PI368

    Abstract
    An adaptive Finite Point Method (FPM) for solving aeroelastic compressible flow problems is presented. The numerical methodology is based on a meshless upwind-biased discretization [...]

  • A. Franci, E. Oñate, J. Carbonell
    (2014). Research Report, Nº PI407

    Abstract
    In this work, a unified updated Lagrangian formulation for solving fluid-structure interaction (FSI) problems is derived. The mixed velocity-pressure formulation for hypoelastic [...]

  • E. Ortega, R. Flores, E. Oñate, C. Sacco, E. González
    (2010). Research Report, Nº PI341

    Abstract
    The design and evaluation of parachute-payload systems is an important field of applications in which numerical analysis tools can make very important contributions. This [...]

  • E. Oñate, J. Miquel, F. Zárate
    (2005). Research Report, Nº PI269

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

  • K. Butler, E. Oñate, R. Rossi, J. Marti, S. Idelsohn
    (2010). Research Report, Nº PI349

    Abstract
    The effects of the thermal properties of three flooring materials on the spread rate of polymer melt over the surface were studied using a model based on the Particle Finite [...]

  • M. Font, E. Oñate, J. Carbonell
    (2011). Research Report, Nº PI366

    Abstract
    El deflectòmetre d’impacte segurament és l’aparell més utilitzat per realitzar assaigs no destructius dels ferms. Els enginyers utilitzen [...]

  • E. Oñate, J. Carbonell
    (2013). Research Report, Nº PI393

    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 [...]

  • F. Salazar, J. Mauro, J. Irazábal, A. Larese, . R. Rossi, E. Oñate, R. Morán, M. Toledo
    (2013). Research Report, Nº PI396

    Abstract
    El Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE) es un centro de investigación dependiente del Gobierno de Cataluña y [...]

  • K. Lau, R. López, E. Oñate
    (2009). Research Report, Nº PI335

    Abstract
    A neural network noise prediction model for a turbulent boundary layer noise mechanism has been created using a feed forward multilayer perceptron and a noise spectrum database [...]

  • (2011). Research Report, Nº PI357

    Abstract
    We present some developments in the Particle Finite Element Method (PFEM) for analysis of complex coupled problems in mechanics involving fluid-soil-structure interaction [...]

  • R. Flores, E. Ortega, E. Oñate
    (2011). Research Report, Nº PI351

    Abstract
    An explicit dynamic structural solver developed at CIMNE for the analysis of parachutes is presented. The canopy fabric has a negligible out-of-plane stiffness, therefore [...]

  • E. Oñate, M. Celigueta, S. Latorre, G. Casas, R. Rossi, J. Rojek
    (2014). Research Report, Nº PI405

    Abstract
    We present a Lagrangian numerical technique for the analysis of flows incorporating physical particles of different sizes. The numerical approach is based on the Particle [...]

  • J. Irazábal, F. Salazar, E. Oñate
    (2012). Research Report, Nº PI390

    Abstract
    The analysis of landslides in reservoirs is particularly interesting because the oscillation of the water surface elevation (especially rapid drawdowns) can foster their occurrence. [...]

  • (2011). Research Report, Nº PI358

    Abstract
    When people talks about research, development and technology transfer (RTD in short) and commercial industrial activities, it is quite usual to mix up objectives, resources [...]

  • M. Masó, E. Oñate, F. Zarate
    (2013). Research Report, Nº PI397

    Abstract
    This final studies work target is to contribute two new beam theories to MAT-fem [6], an educational developed program by CIMNE [5]. Until now the MAT-fem Beams program only [...]

  • E. Oñate, J. Marcipar, J. Piazzese
    (2003). Research Report, Nº PI238

    Abstract
    La eclosión de las Tecnologías de la Información y las Comunicaciones (TIC), y en particular de Internet, ha facilitado el desarrollo de sistemas que, [...]

  • (2017). Research Report, Nº PI417

    Abstract
    We present an overview of the model implemented by the International Centre for Numerical Methods in Engineering (CIMNE, www.cimne.com ) for  the generation of scientific [...]

  • A. Llanos, E. Oñate, F. Zárate
    (2013). Research Report, Nº PI398

    Abstract
    Actualmente existen programas de MAT-fem para calcular vigas de material homogéneo, según la teoría de Euler-Bernoulli o de Timoshenko. El objetivo de [...]

  • E. Oñate, S. Idelsohn, M. Celigueta, R. Rossi, S. Latorre
    (2010). Research Report, Nº PI345

    Abstract
    We present some developments in the formulation of the Particle Finite Element Method (PFEM) for analysis of complex coupled problems in fluid and solid mechanics accounting [...]

  • B. Boroomand, A. Tabatabaie, E. Oñate
    (2004). Research Report, Nº PI249

    Abstract
    A stabilized version of the Finite Point Method (FPM) is presented. A source of instability due to the evaluation of the base function using a least square procedure is discussed. [...]

  • E. Oñate, B. Suárez, F. Salazar, R. Morán, M. Celigueta, S. Latorre
    (2011). Research Report, Nº PI365

    Abstract
    Se describen los conceptos básicos del método de partículas y elementos finitos (PFEM) para análisis de flujos de fluidos en lámina libre [...]

  • (2011). Research Report, Nº PI359

    Abstract
    Se presentan unas reflexiones sobre el ciclo que las ideas recorren desde que surgen en un entorno universitario hasta que se transforman en un producto industrial. Se concretan [...]

  • Personal Repository of Francisco Zarate (1999). 9

    Abstract
    The paper describes how finite element method and the finite volume method can be successfully combined to derive two new families of thin plate and shell triangles with translational [...]

  • (2001). Research Report, Nº PI208

    Abstract
    A stabilized semi-implicit fractional step finite element method for solving coupled fluid-structure interaction problems involving free surface waves is presented. The stabilized [...]

  • (2000). Research Report, Nº PI180

    Abstract
    A stabilized semi-implicit step finite element method for solving coupled fluid-structure interaction problems involving free surface waves is presented. The stabilized governing [...]

  • M. Mier-Torrecilla, S. Idelsohn, E. Oñate
    (2010). Research Report, Nº PI342

    Abstract
    In this work we extend the Particle Finite Element Method (PFEM) to multi-fluid flow problems with the aim of exploiting the fact that Lagrangian methods are specially well [...]

  • (2004). Research Report, Nº PI254

    Abstract
    El método Level Set utilizado en un amplio espectro de problemas de distinta índole, como la simulación de interfaces entre fluidos, el tratamiento de [...]

  • E. Oñate, B. Suárez, J. Canet
    (2007). Research Report, Nº PI301

    Abstract
    Se presenta un resumen de las posibilidades de diversos métodos numéricos basados en la combinación de técnicas de elementos finitos y de partículas [...]

  • (2002). Research Report, Nº PI212

    Abstract
     La utilización de materiales compuestos laminados en estructuras es creciente en todos los ámbitos de la ingeniería. El cálculo de esas estructuras [...]

  • E. Oñate
    (2011). Research Report, Nº PI354

    Abstract
    Cuando se habla de la investigación, el desarrollo tecnológico y la innovación (I+D+I en siglas, que yo escribo todas en mayúsculas [1]) es frecuente [...]

  • (2007). Research Report, Nº PI304

    Abstract
    We present a formulation for analysis of turbulent incompressible flows using a stabilized finite element method (FEM) based on the finite calculus (FIC) procedure. The stabilization [...]

  • C. Felippa, E. Oñate
    (2002). Research Report, Nº PI217

    Abstract
    We define stress and strain splittings appropriate to linearly elastic anisotropic materials with volumetric constraints. The treatment includes rigidtropic materials, [...]

  • (2001). Research Report, Nº PI207

    Abstract
    Se presentan en el artículo las ideas básicas de qué son los métodos numéricos, cuáles son los métodos numéricos más [...]

  • T. Fischer, E. Oñate
    (1995). Research Report, Nº PI60

    Abstract
    This report documents the potential capabilities of adaptive inviscid flow calculations on unstructured meshes in three dimensions using the finite element method. The finite [...]

  • E. Oñate, O. Zienkiewicz
    (1990). Research Report, Nº PI8

    Abstract
    The finite volume method appears to be a particular case of finite elements with a non Galerkin weighting. It is course less accurate for self adjoint problems but has some [...]

  • M. Bordone, E. Oñate, E. Soudah, M. Chiumenti
    (2008). Research Report, Nº PI317

    Abstract
    Las enfermedades cardiovasculares son la primera causa de muerte de la población Europea. Se estima que la mortalidad por enfermedades cardiovasculares es la mitad [...]

  • J. Jiménez, A. Priegue, E. Oñate
    (2005). Research Report, Nº PI272

  • H. Kwak, E. Oñate, S. Kim
    (2003). Research Report, Nº PI229

    Abstract
    Nonlinear dynamic analysis of a reinforced concrete (RC) frame under earthquake loading is performed in this paper on the basis of a hysteretic moment-curvature relation. [...]

  • (2004). Research Report, Nº PI246

    Abstract
    En los últimos años CIMNE ha desarrollado en colaboración con la empresa COMPASS Ingeniería y Sistemas, S.A. (www.compassis.com) un nuevo código [...]

  • J. Rojek, E. Oñate, M. Chiumenti, M. Luege, F. Zarate, O. Fruitos, A. Ferriz, S. Oller
    (2004). Research Report, Nº PI252

    Abstract
    This report presents review of the state of the art of numerical modelling of polymers and polymer coated metal laminates and gives details of selected numerical models including [...]

  • (1999). Research Report, Nº PI166

    Abstract
    A stabilized semi-implicit frictional step finite element method for solving coupled fluid-structure interaction problems involving free surface waves is presented. The stabilized [...]

  • (1999). Research Report, Nº PI169

    Abstract
    El trabajo muestra que los términos de estabilización para la solución por el MEF de problemas de transporte convectivo y de flujo incompresible, pueden [...]

  • R. Codina, C. Morton, E. Oñate, O. Soto
    (1999). Research Report, Nº PI181

    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 [...]

  • (1993). Research Report, Nº PI27

    Abstract
    Esta publicación explica la utilización de un programa de elementos finitos que permita resolver la ecuación de Poisson transitoria, que rige una gran [...]

  • E. Oñate, F. Quintana, R. Codina, J. Canet
    (1991). Research Report, Nº PI14

  • E. Oñate, S. Idelsohn, O. Zienkiewicz
    (1995). Research Report, Nº PI67

  • (1991). Research Report, Nº PI13

    Abstract
    In this paper we present an iterative penalty finite element method for viscous non‐Newtonian creeping flows. The basic idea is solving the equations for the difference [...]

  • G. Bugeda, E. Oñate, D. Joannas
    (1993). Research Report, Nº PI29

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

  • (1994). Research Report, Nº PI49

    Abstract
    In this paper the general non symmetric parametric form of the incremental secant stiffness matrix for nonlinear analysis of solids using the finite element method is derived. [...]

  • M. Kouhi, E. Oñate, G. Bugeda
    (2008). Research Report, Nº PI328

    Abstract
    This document is an introduction to some important methodologies that have been developed in robust design in aerospace engineering. After describing the concept of robustness [...]

  • (2006). Research Report, Nº PI288

    Abstract
    One of the aims of this text is to show some important results in LES modelling and to identify which are main mathematical problems for the development of a complete theory. [...]

  • (2010). Research Report, Nº PI346

    Abstract
    The so-called zigzag theory has been developed in recent years as an extension of the classical layer-wise theory for modeling composite laminated beams, plates and shells. [...]

  • Z. Tang, J. Periaux, G. Bugeda, E. Oñate
    (2008). Research Report, Nº PI322

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

  • E. Oñate, F. Flores, J. Marcipar
    (2007). Research Report, Nº PI303

    Abstract
    This paper shows applications of a recently developed thin shell element adequate for the analysis of membrane and inflatable structures. The element is a three node triangle [...]

  • R. Hernández, A. Larese, E. Oñate
    (2010). Research Report, Nº PI348

    Abstract
    Actualmente las presas de materiales sueltos son la tipología cuya elección es más frecuente debido, en parte, a los grandes avances que se han hecho [...]

  • (2008). Research Report, Nº PI323

    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 [...]

  • (2006). Research Report, Nº PI282

    Abstract
    We present a general formulation for incompressible fluid flow analysis using the finite element method. The necessary stabilization for dealing with convective effects and [...]

  • (2003). Research Report, Nº PI223

    Abstract
    We present a general formulation for incompressible fluid flow analysis using the finite element method (FEM). The necessary stabilization for dealing with convective effects [...]

  • J. Olausson, J. Gustafsson, D. Capua, E. Oñate
    (2002). Research Report, Nº PI211

    Abstract
    This study thoroughly explains the process of implementing Adaptive Mesh Refinement into a Finite Element Analysis program. Using the error norm, a routine for improving an [...]

  • E. Oñate, A. Hanganu, J. Canet
    (2000). Research Report, Nº PI188

    Abstract
    The paper describes a finite element damage model for non linear analysis of concrete or reinforced structures. It is show how can be effectively used to predict local and [...]

  • (2001). Research Report, Nº PI202

    Abstract
    The basis of the finite point method (FPM) for the fully meshless solution of elasticity problems in structural mechanics is described. A stabilization [...]

  • E. Oñate, A. Hanganu, J. Miquel, B. Suárez
    (2000). Research Report, Nº PI193

    Abstract
    Se presenta el concepto de Laboratorio Virtual de Estructuras (LAVE) para evaluar por ordenador la capacidad resistente de estructuras de hormigón y el coeficiente [...]

  • (2000). Research Report, Nº PI196

    Abstract
    A stabilized finite point method (FPM) for meshless analysis of incompressible fluid flows is presented. The stabilization approach is based in the finite calculus (FIC) procedure. [...]

  • J. Mora, J. Canet, E. Oñate, C. Sacco, L. Martínez
    (1999). Research Report, Nº PI177

    Abstract
    La sencillez conceptual de la electrostática esconde todo un abanico de aplicaciones industriales que precisa de herramientas de cálculo numérico para [...]

  • E. Oñate, F. Zárate
    (1999). Research Report, Nº PI149

    Abstract
    The paper describes how the finite element method and the finite volume method can be successfully combined to derive two new families of thin plate and shell triangles with [...]

  • A. Barbat, S. Oller, E. Oñate, A. Hanganu
    (1995). Research Report, Nº PI77

    Abstract
    A local damage constitutive model based on Kachanov’s theory is used within a finite element frame and applied to the case of 2D and 3D Timoshenko beam elements. The [...]

  • J. Hurtado, F. Zárate, E. Oñate
    (2000). Research Report, Nº PI184

    Abstract
    Stochastic Mechanics is a rapidly growing area of research, whose importance is being recognized not only in academic circles but also in industrial practice. This is no doubt [...]

  • (1999). Research Report, Nº PI178

    Abstract
    In this work a generalized anisotropic elastoplastic constitutive model in large deformation is presented. It is used for the analysis of fiber-reinforced composite [...]

  • (1999). Research Report, Nº PI150

    Abstract
    A stabilized finite element formulation for incompressible viscous flows is derived. The starting point are the modified Navier-Stokes equations incorporating naturally the [...]

  • J. Rojek, E. Oñate, J. Canet
    (1995). Research Report, Nº PI71

    Abstract
    En este trabajo se presentan las principales características del programa de ordenador “SIMPACT” desarrollado en el Centro Internacional de Métodos [...]

  • (1993). Research Report, Nº PI40

    Abstract
    The numerical simulation of hot rolling forming processes is very important for the metallurgic industry. This is an efficient and economic tool to simulate the rolling process [...]

  • F. Flores, E. Oñate
    (1993). Research Report, Nº PI39

    Abstract
    En este trabajo se realiza inicialmente un resumen teórico de las teorías de láminas y vigas desarrolladas por Simo y colaboradores [2-6,12-15]. Luego [...]

  • (1991). Research Report, Nº PI17

    Abstract
    En este trabajo se presentan las principales características del programa de ordenador “IMPACT 3D” actualmente en desarrollo en el Centro Internacional [...]

  • E. Ortega, R. Flores, E. Oñate
    (2010). Research Report, Nº PI343

    Abstract
    An unsteady low-order panel method for three-dimensional subsonic analyses is presented. The method, which is based on well-established techniques in computational aerodynamics, [...]

  • J. Rojek, E. Oñate, C. Labra, H. Kazal, J. Akerman
    (2009). Research Report, Nº PI336

    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 [...]

  • R. Flores, E. Ortega, E. Oñate
    (2009). Research Report, Nº PI334

    Abstract
    This work presents a wing deformation analysis of a twin-sting-mounted commercial aircraft model. Twin-sting arrangements minimize flow disturbances around the model fuselage [...]

  • C. Buachart, E. Ortega, E. Oñate
    (2009). Research Report, Nº PI337

  • (2010). Research Report, Nº PI347

    Abstract
    We present some developments in the formulation of the Particle Finite Element Method (PFEM) for analysis of complex coupled problems on fluid and solid mechanics in engineering [...]

  • (2009). Research Report, Nº PI333

    Abstract
    A new computational procedure for analysis of the melting and flame spread of polymers under fire conditions is presented. The method, termed Particle Finite Element Method [...]

  • Z. Tang, J. Périaux, E. Oñate, G. Bugeda
    (2008). Research Report, Nº PI314

    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 [...]

  • (2007). Research Report, Nº PI312

    Abstract
    El CIMNE (www.cimne.com), un centre de recerca consorci entre la Universitat Politècnica de Catalunya i la Generalitat de Catalunya, fa vint anys. El CIMNE està [...]

  • R. Rossi, E. Oñate, A. Maymó
    (2008). Research Report, Nº PI327

    Abstract
    This diploma thesis deals with the implementation of a fluid solver for incompressible and compressible flows within the multi-physics framework Kratos. The presentation of [...]

  • J. Arteaga-Gomez, R. Löhner, J. Rojek, E. Oñate
    (2006). Research Report, Nº PI280

    Abstract
    This paper describes the coupling of FEFLO, a general purpose compressible and incompressible flow solver base on adaptive unstructured grids with SIMPACT, a general purpose, [...]

  • A. Daring, R. López, R. Flores, G. Bugeda, E. Oñate
    (2007). Research Report, Nº PI306

    Abstract
    An optimization methodology based on neural networks was developed for use in 2D optimal shape design problems. Neural networks were used as a parameterization scheme to represent [...]

  • E. Oñate, F. Flores, L. Neamtu
    (2007). Research Report, Nº PI302

    Abstract
    An enhanced rotation-free three node triangular shell element (termed EBST) is presented. The element formulation is based on a quadratic interpolation of the geometry in [...]

  • E. Oñate, C. Felippa
    (2006). Research Report, Nº PI283

    Abstract
    We present a variational formulation of the finite calculus (FIC) equations for problems in mechanics governed by differential equations with symmetric operators. Applications [...]

  • J. Piazzese, J. Jiménez, E. Oñate
    (2005). Research Report, Nº PI268

  • E. Ortega, R. Flores, E. Oñate
    (2005). Research Report, Nº PI275

    Abstract
    An edge-based high-resolution scheme for the solution of the compressible Euler equations on unstructured finite elements grids is presented. The flow solver adopted in the [...]

  • J. Jiménez, A. Priegue, F. Guzmán, E. Oñate
    (2005). Research Report, Nº PI279

    Abstract
      Este trabajo presenta los desarrollos llevados a cabo en CIMNE en la programación y gestión de redes de motas utilizando Internet. El trabajo se enmarca [...]

  • R. Löhner, C. Yang, E. Oñate
    (2006). Research Report, Nº PI281

    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 [...]

  • (2006). Research Report, Nº PI293

    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 [...]

  • J. Jiménez, A. Priegue, J. Piazzese, E. Oñate
    (2005). Research Report, Nº PI277

  • A. Fung, E. Pahl, G. Bugeda, E. Oñate
    (2005). Research Report, Nº PI270

    Abstract
    An optimization code called Optima has been developed at the International Centre for Numerical Methods in Engineering (CIMNE). This report validates two reputably robust [...]

  • C. Felippa, E. Oñate
    (2003). Research Report, Nº PI237

    Abstract
    This article presents the first application of the Finite Calculus (FIC) in a Ritz-FEM variational framework. FIC provides a steplength parametrization of mesh dimensions, [...]

  • (2004). Research Report, Nº PI257

    Abstract
    The objective of the project that is presented at the IV Prize Duran i Farell Award for Research and Technology is the development of a new computational code based on the [...]

  • J. Rojek, M. Luege, E. Oñate
    (2004). Research Report, Nº PI265

    Abstract
    This report present review of the state of the art of numerical modelling of polymers and polymer coated metal laminates and gives details of selected numerical models including [...]

  • (2003). Research Report, Nº PI239

    Abstract
    A finite calculus formulation of the level set equation is presented. Quadratic Galerkin finite elements are used for spatial discretization. A unique stabilization parameter [...]

  • E. Oñate, J. Marcipar, F. Zárate
    (2003). Research Report, Nº PI221

    Abstract
    Se presenta una breve panorámica de las posibilidades de las nuevas Tecnologías de la Información y las Comunicaciones en el sector de la construcción. [...]

  • (2001). Research Report, Nº PI205

    Abstract
    The expression ‘finite calculus’ refers to the derivation of the governing differential equations in mechanics by invoking balance of fluxes, forces, etc. in a [...]

  • (2000). Research Report, Nº PI194

  • C. Felippa, E. Oñate
    (2002). Research Report, Nº PI216

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

  • (2000). Research Report, Nº PI192

    Abstract
    El artículo presenta una sucinta panorámica sobre la evolución de los métodos numéricos dese la antigua Babilonia hasta nuestros días. [...]

  • (2003). Research Report, Nº PI222

    Abstract
    This chapter presents an overview of some computational methods for analysis of ship hydrodynamics problems. Attention is focused on the description of a stabilized finite [...]

  • A. Hanganu, E. Oñate, A. Barbat
    (2001). Research Report, Nº PI206

    Abstract
    The paper introduces a new global damage evaluation method, thus obtaining a meaningful global damage index (GDI). A numerical procedure for predicting a local and global [...]

  • (2000). Research Report, Nº PI191

    Abstract
    Se plantean en el artículo los límites de los métodos numéricos para resolver cualquier problema que afecte a la vida del hombre. Se discute la [...]

  • (1999). Research Report, Nº PI164

    Abstract
    The basis of the finite point method for the fully meshless solution of structure mechanics problems is described. A new stabilization technique based on a finite increment [...]

  • G. Chiandussi, G. Bugeda, E. Oñate
    (1998). Research Report, Nº PI147

    Abstract
    A simple method to automatically update the finite element mesh of the analysis domain is proposed. The method considers the mesh as a fictitious elastic body subjected to [...]

  • E. Oñate, F. Zárate, X. Plana, L. Neamtu
    (1999). Research Report, Nº PI168

    Abstract
    A new three node shell triangular element with translational degree of freedom as the only modal variables is presented. The element formulation is based on combining a standard [...]

  • (1999). Research Report, Nº PI154

    Abstract
    The paper presents an overview of some recent developments in computational mechanics introducing new degrees of “freedom” allowing the solution of more challenging [...]

  • (1999). Research Report, Nº PI167

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

  • S. Idelsohn, J. Heinrich, E. Oñate
    (1994). Research Report, Nº PI51

    Abstract
    A Petrov–Galerkin formulation based on two different perturbations to the weighting functions is presented. These perturbations stabilize the oscillations that are normally [...]

  • (1994). Research Report, Nº PI47

    Abstract
    Dentro de todos los procesos denominados “Rapid Prototyping”, se presenta en esta publicación el denominado estereolitografía. Estos procesos cuyo [...]

  • (1994). Research Report, Nº PI53

    Abstract
    This paper describes a number of triangular and quadrilateral plate and Shell elements derived via Reissner-Mindlin plate theory and mixed interpolation. It shown how by introducing [...]

  • E. Car, S. Oller, E. Oñate
    (1998). Research Report, Nº PI139

    Abstract
    En este trabajo se presenta un modelo constitutivo elastoplástico anisótropo generalizado en deformaciones finitas para el análisis de materiales compuestos [...]

  • T. Fischer, J. Canet, O. Fruitos, E. Oñate
    (1994). Research Report, Nº PI50

  • G. Chiandussi, G. Bugeda, E. Oñate
    (1998). Research Report, Nº PI144

    Abstract
    A simple method to automatically update the finite element mesh of the analysis domain is proposed. The method considers the mesh as a fictitious elastic body subjected to [...]

  • (1996). Research Report, Nº PI81

    Abstract
    The concept of the so called “artificial or balancing diffusion” used to stabilize the numerical solution of advective diffusive transport and fluid flow [...]

  • E. Oñate, F. Zárate, F. Flores
    (1993). Research Report, Nº PI33

    Abstract
    A new plate triangle based on Reissner–Mindlin plate theory is proposed. The element has a standard linear deflection field and an incompatible linear rotation field [...]

  • (1993). Research Report, Nº PI31

    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 [...]

  • (1992). Research Report, Nº PI21

    Abstract
    This paper presents an overview of different computational procedures for finite element analysis of metal forming problems. Both the displacement and flow approaches are [...]

  • T. Hughes, E. Oñate, J. Canet
    (1991). Research Report, Nº PI11

    Abstract
    This report presents a method for the solution of two dimensional, potential flow around an aerofoil base on a Finite Element Method for the solution of Laplace’s equation. [...]

  • G. Bugeda, D. Joannas, E. Oñate
    (1993). Research Report, Nº PI34

    Abstract
    L’objet de ce rapport est de presenter l’approche choise par le CIMNE afin d’optimiser des forms, dans le cadre des équations du potentiel incompressible [...]

  • (1993). Research Report, Nº PI28

    Abstract
    A finite element formulation for solving multidimensional phase-change problems is presented. The formulation considers the temperature as the unique state variable, it is [...]

  • E. Oñate, A. Hanganu
    (1999). Research Report, Nº PI176

    Abstract
    Se presenta en el trabajo una panorámica de los modelos más recientes para evaluar la resistencia última de estructuras de hormigón en masa y armado. [...]

  • E. Oñate, O. Zienkiewicz, B. Suarez
    (1990). Research Report, Nº PI5

    Abstract
    In this paper the necessary requirements for the good behaviour of shear constrained Reissner–Mindlin plate elements for thick and thin plate situations are re‐interpreted [...]

  • (2000). Research Report, Nº PI195

  • E. Oñate, J. Marti, P. Ryzhakov, R. Rossi, S. Idelsohn
    (2013). Research Report, Nº PI395

    Abstract
    A computational procedure for analysis of the melting, burning and flame spread of polymers under fire conditions is presented. The method, termed Particle Finite Element [...]

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