• N. Nash, A. Portela, C. Sirerol, I. Manolakis, A. Comer
    MECHCOMP, 5th international Conference on Mechanics of Composites, Lisbon, Portugal

    Abstract
    Fibre-reinforced polymer (FRP) composite materials find increasing acceptance and application in a number of transport sectors (aviation, land & waterborne transport) [...]

  • T. Gobikannan, A. Portela, C. Athavale, A. Comer, A. Haldar
    Open Access Repository of the FIBRESHIP project (2020). 10

    Abstract
    In the marine industry, Fibre-reinforced polymers (FRP) are currently dominating the manufacture of vessels up to 50m in length, with liquid resin infusion (LRI) being the [...]

  • J. Oliver, M. Caicedo, M. Roubin, A. Huespe, J. Hernández
    Computer Methods in Applied Mechanics and Engineering (2015). Vol. 294, pp. 384-427

    Abstract
    A new approach to two-scale modeling of propagating fracture, based on computational homogenization (FE2), is presented. The specific features of the approach are: a) a continuum [...]

  • J. Oliver, M. Caicedo, E. Roubin, A. Huespe
    Key engineering materials (2014). Vol. 627, pp. 349-352 (Preprint)

    Abstract
    This paper presents a FE2 multi-scale framework for numerical modeling of the structural failure of heterogeneous quasi-brittle materials. The model is assessed by application [...]

  • J. Hernández, J. Oliver, A. Huespe, M. Caicedo, J. Cante
    Computer Methods in Applied Mechanics and Engineering (2014). Vol. 276, pp. 149-189 (Preprint)

    Abstract
    A novel model-order reduction technique for the solution of the fine-scale equilibrium problem appearing in computational homogenization is presented. The reduced set of empirical [...]

  • A. Portela, C. Athavale, I. Manolakis, A. Comer
    SAMPE Europe Conference 2019 Nantes - France

    Abstract
    One of the main restrictions in adopting polymer composite materials for primary and secondary structural applications in marine vessels over 50 meters in length is concerns [...]

  • J. Oliver, I. Dias, A. Huespe
    Computer Methods in Applied Mechanics and Engineering (2014). Vol. 274, pp. 289-348 (Preprint)

    Abstract
    The work presents two new numerical techniques devised for modeling propagating material failure, i.e. cracks in fracture mechanics or slip-lines in soil mechanics. The first [...]

  • J. Cante, C. Dávalos, J. Hernández, J. Oliver, P. Jonsén, . G.Gustafsson, H. Häggblad
    Computational particle mechanics (2014). Vol. 1 (1), pp. 47-70

    Abstract
    The potential of numerical methods for the solution and optimization of industrial granular flows problems is widely accepted by the industries of this field, the challenge [...]

  • A. Huespe, J. Oliver, D. Mora
    Computational Mechanics (2013). Vol. 52 (6), pp. 1243-1264 (Preprint)

    Abstract
    A finite element methodology for simulating the failure of high performance fiber reinforced concrete composites (HPFRC), with arbitrarily oriented short fibers, is presented. [...]

  • J. Oliver, D. Mora, A. Huespe, R. Weyler
    International Journal of Solids and Structures (2012). Vol. 49 (21), pp. 2990-3007

    Abstract
    A new formulation to model the mechanical behavior of high performance fiber reinforced cement composites with arbitrarily oriented short fibers is presented. The formulation [...]

  • J. Oliver, A. Huespe, I. Dias
    Computer Methods in Applied Mechanics and Engineering (2012). Vol. 241-244, pp. 323-336

    Abstract
    The work focuses on the connections of strain localization modeling of material failure and discrete fracture mechanics. It is an attempt to give an answer to the old question [...]

  • R. Weyler, J. Oliver, T. Sain, J. Cante
    Computer Methods in Applied Mechanics and Engineering (2012). Vol. 205-208 (1), pp. 68-82

    Abstract
    This work focuses on the assessment of the relative performance of the so-called contact domain method, using either the Lagrange multiplier or the penalty strategies. [...]

  • A. Huespe, A. Needleman, J. Oliver, P. Sánchez
    International Journal of Plasticity (2012). Vol. 28 (1), pp. 53-69

    Abstract
    We present a finite deformation generalization of the finite thickness embedded discontinuity formulation presented in our previous paper [A.E. Huespe, A. Needleman, J. Oliver, [...]

  • J. Hernández, J. Oliver, J. Cante, R. Weyler
    Powder Metallurgy (2012). Vol. 55 (1), pp. 36-44

    Abstract
    To date, the modelling of crack formation during the ejection stage in powder metallurgy die compaction processes has fallen outside the scope of conventional finite element [...]

  • J. Hernández, J. Oliver, J. Cante, . Weyler
    International Journal for Numerical Methods in Engineering (2011). Vol. 87 (8), pp. 735-767

    Abstract
    This paper deals with the question of how to efficiently integrate a constitutive model that describes the densification of powders and the potential formation of cracks in [...]

  • J. Hernández, J. Cante, J. Oliver, R. Weyler
    Journal of Materials Processing Technology (2011). Vol. 211 (8), pp. 1348-1357

    Abstract
    The present paper is concerned with the finite element modeling of Powder Metallurgy (P/M) cold die compaction process. Rather than on material constitutive theories or on [...]

  • J. Cante, M. Riera, J. Oliver, J. Prado
    Granular Matter (2011). Vol. 13 (1), pp. 79-92

    Abstract
    Experimental and numerical studies of powder flow during the die filling stage in powder metallurgy cold compaction processes are presented. An experimental setting consisting [...]

  • D. Linero, J. Oliver, A. Huespe
    Ingeniería e investigación (2010). Vol. 30 (3), pp. 16-26

    Abstract
    En este trabajo se presentan los resultados de la simulación numérica del proceso de fractura en páneles de concreto reforzado sometidos a cortante, utilizando [...]

  • D. Linero, J. Oliver, A. Huespe
    Ingeniería e investigación (2010). Vol. 30 (2), pp. 5-15

    Abstract
    En general, las estructuras de concreto reforzado como vigas, columnas y muros están conformadas por entramados complejos de barras de acero embebidas en una matriz [...]

  • P. Sánchez, A. Huespe, J. Oliver, S. Toro
    International Journal of Solids and Structures (2010). Vol. 47 (5), pp. 559-570

    Abstract
    In this contribution, a finite element methodology devised to simulate the structural deterioration of corroded reinforced concrete members is presented. The proposed [...]

  • J. Hernández, J. Oliver, J. Cante, R. Weyler
    International Journal of Solids and Structures (2011). Vol. 48 (2), pp. 292-316

    Abstract
    This paper presents a constitutive model describing the mechanical behavior of metal powders during (uniaxial) cold die compaction processes, placing special emphasis on the [...]

  • S. Hartmann, R. Weyler, J. Oliver, J. Hernández
    CMES: computer modeling in engineering and sciences (2010). Vol. 55 (3), pp. 211-269

    Abstract
    This work describes a three-dimensional contact domain method for large deformation frictionless contact problems. Theoretical basis and numerical aspects of this specific [...]

  • J. Oliver, A. Huespe, J. Cante, G. Díaz
    International Journal for Numerical Methods in Engineering (2010). Vol. 83, pp. 768-804

    Abstract
    The work focuses on the numerical resolution of the discontinuous material bifurcation problem as a relevant ingredient in computational material failure mechanics. The problem [...]

  • S. Hartmann, J. Oliver, R. Weyler, J. Cante, J. Hernández
    Computer Methods in Applied Mechanics and Engineering (2009). Vol. 198 (33-36), pp. 2607-2631

    Abstract
    This second part of the work describes the numerical aspects of the developed contact domain method for large deformation frictional contact problems. The theoretical basis [...]

  • A. Huespe, A. Needlman, J. Oliver, P. Sánchez
    International Journal of Plasticity (2009). Vol. 25, pp. 2349-2365

    Abstract
    We present a finite element method with a finite thickness embedded weak discontinuity to analyze ductile fracture problems. The formulation is restricted to small geometry [...]

  • J. Oliver, S. Hartmann, J. Cante, R. Weyler, J. Hernández
    Computer Methods in Applied Mechanics and Engineering (2009). Vol. 198, pp. 2591-2606

    Abstract
    In the first part of this work, the theoretical basis of a frictional contact domain method for two-dimensional large deformation problems is presented. Most of the [...]

  • O. Manzoli, J. Oliver, A. Huespe, G. Diaz
    Computers and Concrete (2008). Vol. 5 (4), pp. 401-416

    Abstract
    The paper presents a methodology to model three-dimensional reinforced concrete members by means of embedded discontinuity elements based on the Continuum Strong Discontinuous [...]

  • P. Sánchez, A. Huespe, J. Oliver
    International Journal of Plasticity (2008). Vol. 24 (6), pp. 1008-1038

    Abstract
    In this work, we analyze some aspects of the macroscopic Gurson–Tvergaard–Needleman (GTN) constitutive model when it is addressed to solve ductile fracture problems [...]

  • J. Oliver, A. Huespe, J. Cante
    Computer Methods in Applied Mechanics and Engineering (2008). Vol. 197 (21-24), pp. 1865-1889

    Abstract
    An implicit/explicit integration scheme for non-linear constitutive models is presented. It aims at providing additional computability to those solid mechanics problems were [...]

  • O. Manzoli, J. Oliver, A. Huespe
    IBRACON structures and materials journal (2008). Vol. 1 (1), pp. 85-83

    Abstract
    This paper presents a methodology to model three-dimensional reinforced concrete members by means of embedded discontinuity elements based on the Continuous Strong Discontinuous [...]

  • J. Oliver, D. Linero, A. Huespe, O. Manzoli
    Computer Methods in Applied Mechanics and Engineering (2008). Vol. 197 (5), pp. 332-348

    Abstract
    The paper presents a new methodology to model material failure, in two-dimensional reinforced concrete members, using the Continuum Strong Discontinuity Approach (CSDA). The [...]

  • M. Papadrakakis, V. Papadopoulos, N. Lagaros, J. Oliver, A. Huespe, P. Sánchez
    Structural safety (2007). Vol. 30 (3), pp. 217-235

    Abstract
    Probabilistic analysis is an emerging field of structural engineering which is very significant in structures of great importance like dams, nuclear reactors etc. In this [...]

  • P. Sánchez, V. Sonzogni, A. Huespe, J. Oliver
    Journal of Applied Mechanics. Transactions of the ASME. (2006). Vol. 73 (12), pp. 995-1004

    Abstract
    A stabilized mixed finite element with elemental embedded strong discontinuities for shear band modeling is presented. The discrete constitutive model, representing the cohesive [...]

  • J. Oliver, A. Huespe, S. Blanco, D. Linero
    Computer Methods in Applied Mechanics and Engineering (2006). Vol. 195 (92), pp. 7093-7114

    Abstract
    Robustness and stability of the Continuum Strong Discontinuity Approach (CSDA) to material failure are addressed. After identification of lack of symmetry of the finite element [...]

  • J. Oliver, A. Huespe, P. Sánchez
    Computer Methods in Applied Mechanics and Engineering (2006). Vol. 195 (37-40), pp. 4732-4752

    Abstract
    A comparative study on finite elements for capturing strong discontinuities by means of elemental (E-FEM) or nodal enrichments (X-FEM) is presented. Based on the same constitutive [...]

  • A. Huespe, J. Oliver, M. Gómez, S. Blanco, D. Linero
    International Journal of fracture (2006). Vol. 137 (1-4), pp. 211-229

    Abstract
    The paper focuses on the Continuum Strong Discontinuity Approach (CSDA) to fracture mechanics, and the traction-separation cohesive laws induced from continuum dissipative [...]

  • J. Cante, J. Oliver, C. González, J. Calero, F. Benítez
    Powder Metallurgy (2005). Vol. 45 (1), pp.85-92

    Abstract
    A numerical model for the powder transfer stage in powder metallurgy cold compaction processes, and the corresponding material characterisation procedure, are proposed. They [...]

  • J. Oliver, A. Huespe
    Computer Methods in Applied Mechanics and Engineering (2004). Vol. 193 (27-29), pp. 2987-3014

    Abstract
    The paper deals with several aspects related to numerical modelling of material failure in strong discontinuity settings: (a) the onset and development of local material failure [...]

  • J. Oliver, A. Huespe
    Computer Methods in Applied Mechanics and Engineering (2004). Vol. 193 (30-32), pp. 3195-3220

    Abstract
    The paper focuses the numerical modelling of material failure in a strong discontinuity setting using a continuum format. Displacement discontinuities, like fractures, cracks, [...]

  • J. Oliver, A. Huespe, M. Gómez, S. Blanco
    Computers and Concrete (2004). Vol. 1 (1), pp. 61-76

    Abstract
    The paper is devoted to present the Continuum Strong Discontinuity Approach (CSDA) and to examine its capabilities for modeling cracking of concrete. After introducing the [...]

  • J. Oliver, A. Huespe, M. Valentín, E. Samaniego
    International Journal for Numerical Methods in Engineering (2003). Vol. 56 (7), pp. 1051-1082

    Abstract
    Taking the strong discontinuity approach as a framework for modelling displacement discontinuities and strain localization phenomena, this work extends previous results in [...]

  • J. Oliver, A. Huespe, E. Samaniego
    International Journal for Numerical Methods in Engineering (2003). Vol. 56 (14), pp. 2135-2161

    Abstract
    The work focuses on the presently existing families of finite elements with embedded discontinuities and explores the possibilities of obtaining symmetric statically consistent [...]

  • J. Oliver, A. Huespe, M. Pullido, E. Chaves
    Engineering Fracture Mechanics (2002). Vol. 69 (2), pp. 113-136

    Abstract
    The paper deals with the strong discontinuity approach and shows the links with the decohesive fracture mechanics provided by that approach. On the basis of 1D continuum damage [...]

  • J. Oliver
    International Journal of Solids and Structures (2000). Vol. 37 (48-50), pp. 7207-7229

    Abstract
    On the basis of continuum constitutive models (stress vs. strain), the introduction of strong discontinuity kinematics (considering jumps in the displacement fields across [...]

  • J. Oliver
    International Journal for Numerical Methods in Engineering (1996). Vol. 39 (21), pp. 3601-3623

    Abstract
    On the basis of the strong discontinuity analysis of standard local stress–strain constitutive equations, a finite element framework for the simulation of strong discontinuities, [...]

  • J. Oliver
    International Journal for Numerical Methods in Engineering (1996). Vol. 39 (21), pp. 3575-3600

    Abstract
    The paper addresses some fundamental aspects about the use of standard constitutive equations to model strong discontinuities (cracks, shear bands, slip lines, etc.) in solid [...]

  • J. Oliver
    Computational Mechanics (1995). Vol. 17 (1-2), pp. 49-61

    Abstract
    Numerical simulation of strong discontinuities by using standard stress-strain constitutive equations including strain-softening is addressed. The concept of strong discontinuity [...]

  • J. Oliver, J. Simó, F. Armero
    Computational Mechanics (1993). Vol. 12 (5), pp. 277-296

    Abstract
    Ket qualitative features of solutions exhibiting strong discontinuities in rate-independent inelastic solids are identified and exploited in the design of a new class of finite [...]

  • J. Oliver
    International Journal for Numerical Methods in Engineering (1989). Vol. 28 (2), pp. 461-474

    Abstract
    A numerical scheme for crack modelling by means of continuous displacement fields is presented. In two-dimensional problems a crack is modelled as a limiting case of two singular [...]

  • A. Ferrer
    International Journal for Numerical Methods in Engineering (2019). Vol. 120 (3), pp. 361-381 (Preprint)

    Abstract
    Topology optimization has emerged in the last years as a promising research fieldwith a wide range of applications. One of the most successful approaches, theSIMP method, [...]

  • S. Amstutz, C. Dapogny, A. Ferrer
    Numerische mathematik (2018). Vol. 140 (1), pp. 35-94

    Abstract
    In this article, we introduce and analyze a general procedure for approximating a ‘black and white’ shape and topology optimization problem with a density optimization [...]

  • A. Ferrer, J. Cante, J. Hernández, J. Oliver
    International Journal for Numerical Methods in Engineering (2018). Vol. 114 (3), pp. 232-254 (Preprint)

    Abstract
    The Domain Interface Method (DIM) is extended in this contribution for the case of mixed fields as encountered in multiphysics problems. The essence of the non-conforming [...]

  • J. Hernández, M. Caicedo, A. Ferrer
    Computer Methods in Applied Mechanics and Engineering (2017). Vol. 313, pp. 687-722 (Preprint)

    Abstract
    We present a general framework for the dimensional reduction, in terms of number of degrees of freedom as well as number of integration points (“hyper-reduction”), [...]

  • S. Giusti, A. Ferrer, J. Oliver
    Computer Methods in Applied Mechanics and Engineering (2016). Vol. 311, pp. 134-150

    Abstract
    The topological sensitivity analysis for the heterogeneous and anisotropic elasticity problem in two-dimensions is performed in this work. The main result of the paper is [...]

  • P. Nadukandi, N. Higham
    SIAM journal on scientific computing (2018). Vol. 40 (6), pp. A4060-A4082

    Abstract
    We derive an algorithm for computing the wave-kernel functions cosh \surd A and sinhc\surd A for an arbitrary square matrix A, where sinhcz = sinh(z)/z. The algorithm is based [...]

  • X. Cipriano, J. Carbonell, J. Cipriano, D. Pérez
    A quarterly newsletter of the IEA-AIVC. (2010).

    Abstract
    The Mediterranean seaside cities like the towns placed at the Metropolitan region of Barcelona have soft winters and variable summers which change from hot to very hot. Historically, [...]

  • X. Cipriano, J. Cipriano
    L'Atzavara (2004). Vol. 12, pp. 51-60

  • X. Cipriano, J. Carbonell, J. Cipriano
    International Journal of Sustainable Energy (2009). Vol. 28 (1-3), pp. 3-18

    Abstract
    Energy efficiency benchmarking can be used to monitor changes in the overall efficiency of buildings. Benchmarking models, based on energy efficiency indicators, are valuable [...]

  • J. Martí-Herrero, J. Cipriano
    Bioresource Technology (2012). Vol. 108, pp. 21-27

    Abstract
    The aim of this paper is to present a novel, universal, methodology for the design of low cost tubular digesters. This method improves on the established methodology by avoiding [...]

  • J. Bloem, C. Lodi, J. Cipriano, D. Chemisana
    Energy and Buildings (2012). Vol. 50, pp. 63-73

    Abstract
    This article presents and discusses an outdoor Test Reference Environment (TRE) for double skin applications of Building Integrated PhotoVoltaic (BIPV) Systems. From [...]

  • C. Lodi, P. Bacher, J. Cipriano, H. Madsen
    Energy and Buildings (2012). Vol. 50, pp. 273-281

    Abstract
    This paper deals with grey-box modelling of the energy transfer of a double skin Building Integrated Photovoltaic (BIPV) system. Grey-box models are based on a combination [...]

  • S. Danov, J. Carbonell, J. Cipriano, J. Martí-Herrero
    Energy and Buildings (2013). Vol. 57, pp. 110-118

    Abstract
    A method for determining the total heat loss coefficient, the effective heat capacity and the net solar gain of a building is presented. The method uses a linear regressions [...]

  • J. Cipriano, G. Houzeaux, D. Chemisana, C. Lodi, J. Martí-Herrero
    Applied thermal engineering (2013). Vol. 57 (1-2), pp. 57-68

    Abstract
    Double skin façades with photovoltaic integrated systems are building components which combine functions of the building envelope with electricity and thermal [...]

  • J. Cipriano, G. Mor Martinez, D. Chemisana, D. Pérez, G. Gamboa, X. Cipriano
    Energy and Buildings (2015). Vol. 87, pp. 370-385

    Abstract
    This paper is focused on increasing the knowledge on methods for calibrating BES models and to get more insights of different approaches for the optimization of the [...]

  • J. Cipriano, G. Houzeaux, G. Mor Martinez, U. Eicker, J. Carbonell, S. Danov
    Solar Energy (2016). Vol. 129, pp. 310-331

    Abstract
    In the development of dynamic models for the energy performance evaluation of building integrated natural ventilated PV components there are still many open questions regarding [...]

  • X. Cipriano, A. Vellido, J. Cipriano, J. Martí-Herrero, S. Danov
    Energy Efficiency (2017). Vol. 10, pp. 359-382

    Abstract
    In recent years, big efforts have been dedicated to identify which are the factors with highest influence in the energy consumption of residential buildings. These factors [...]

  • J. Liisberg, J. Moller, H. Bloem, J. Cipriano, G. Mor Martinez, H. Madsen
    Sustainable Cities and Society (2016). Vol. 27, pp. 83-98

    Abstract
    Even for similar residential buildings, a huge variability in the energy consumption can be observed. This variability is mainly due to the different behaviours of the occupants [...]

  • Z. Greve, F. Lecron, F. Vallée, G. Mor Martinez, D. Pérez
    CIRED-Open Acces Proceedings Journal (2017). Vol. 2017 (1), pp. 2165-2168

    Abstract
    This work positions the task of grouping electricity load time series among the vast field of clustering, and highlights corresponding research issues. A selection of the [...]

  • F. Lecron, Z. Grève, F. Vallée, G. Mor Martinez, D. Pérez, S. Danov, J. Cipriano
    CIRED-Open Acces Proceedings Journal (2017). Vol. 2017 (1), pp. 2568-2571

    Abstract
    The prediction task is attracting more and more attention among the power system community. Accurate predictions of electrical quantities up to a few hours ahead (e.g. renewable [...]

  • X. Cipriano, G. Gamboa, S. Danov, G. Mor Martinez, J. Cipriano
    Sustainable Cities and Society (2017). Vol. 32, pp. 236-276

    Abstract
    The main instrument used to implement the EU 2020 objectives at local level is the Covenant of Mayors, which fosters the development of Sustainable Energy Action Plans (SEAPs); [...]

  • G. Mor Martinez, J. Vilaplana, S. Danov, J. Cipriano, F. Solsona, D. Chemisana
    IEEE Access (2018). Vol. 6, pp. 71132-71142

    Abstract
    This paper presents the EMPOWERING project, a Big Data environment aimed at helping domestic customers to save electricity by managing their consumption positively. This is [...]

  • D. Roca, T. Pàmies, J. Cante, O. Lloberas-Valls, J. Oliver
    Journal of vibration and acoustics. (2020). Vol. 142 (2), pp. 1-19

    Abstract
    The so called Locally Resonant Acoustic Metamaterials (LRAM) are a new kind of artificially engineered materials capable of attenuating acoustic waves. As the name suggests, [...]

  • J. Oliver, D. Yago, J. Cante, O. Lloberas-Valls
    Computer Methods in Applied Mechanics and Engineering (2019). Vol. 355, pp. 779-819

    Abstract
    The work explores a specific scenario for structural computational optimization based on the following elements: (a) a relaxed optimization setting considering the ersatz [...]

  • D. Roca, D. Yago, J. Cante, O. Lloberas-Valls, J. Oliver
    Computer Methods in Applied Mechanics and Engineering (2019). Vol. 345, pp. 161-182

    Abstract
    The so-called Locally Resonant Acoustic Metamaterials (LRAM) are considered for the design of specifically engineered devices capable of stopping waves from propagating in [...]

  • I. Dias, J. Oliver, O. Lloberas-Valls
    Key engineering materials (2018). Vol. 774, pp. 547-552

    Abstract
    This work presents some novel results obtained by using the strain injection techniques for modeling crack propagation in challenging 3D benchmark tests. The techniques were [...]

  • I. Dias, J. Oliver, O. Lloberas-Valls
    International journal of fracture (2018). Vol. 212 (1), pp. 67-87 (Preprint)

    Abstract
    This paper presents a finite element approach for modelling three-dimensional crack propagation in quasi-brittle materials, based on the strain injection and the crack-path [...]

  • D. Roca, O. Lloberas-Valls, J. Cante, J. Oliver
    Computer Methods in Applied Mechanics and Engineering (2018). Vol. 330, pp. 415-446 (Preprint)

    Abstract
    A framework, based on an extended Hill–Mandel principle accounting for inertial effects (Multiscale Virtual Work principle), is developed for application to acoustic [...]

  • C. Méndez, J. Podestá, O. Lloberas-Valls, S. Toro, A. Huespe, J. Oliver
    International Journal for Numerical Methods in Engineering (2017). Vol. 112 (10), pp. 1353-1380

    Abstract
    A topology optimization technique based on the topological derivative and the level set function is utilized to design/synthesize the micro-structure of a pentamode material [...]

  • O. Lloberas-Valls, M. Cafiero, J. Cante, A. Ferrer, J. Oliver
    Computational Mechanics (2017). Vol. 59 (4), pp. 579-610 (Preprint)

    Abstract
    The Domain Interface Method (DIM) is extended in this contribution for the case of mixed fields as encountered in multiphysics problems. The essence of the non-conforming [...]

  • A. Ferrer, J. Oliver, J. Cante, O. Lloberas
    Advanced modeling and simularion in engineering sciences (2016). Vol. 3 (1), pp. 1-22 (Preprint)

    Abstract
    The work deals on computational design of structural materials by resorting to computational homogenization and topological optimization techniques. The goal is then to minimize [...]

  • M. Caicedo, J. Oliver, A. Huespe, O. Lloberas-Valls
    Key engineering materials (2016). Vol. 713, pp. 248-253 (Preprint)

    Abstract
    Nowadays, the model order reduction techniques have become an intensive research eld because of the increasing interest in the computational modeling of complex phenomena [...]

  • O. Lloberas-Valls, A. Huespe, J. Oliver, I. Dias
    Computer Methods in Applied Mechanics and Engineering (2016). Vol. 308, pp. 499-534 (Preprint)

    Abstract
    A computationally affordable modeling of dynamic fracture phenomena is performed in this study by using strain injection techniques and Finite Elements with Embedded strong [...]

  • M. Cafiero, O. Lloberas-Valls, J. Cante, J. Oliver
    Computational Mechanics (2016). Vol. 57 (4), pp. 555-581

    Abstract
    A domain decomposition technique is proposed which is capable of properly connecting arbitrary non-conforming interfaces. The strategy essentially consists in considering [...]

  • I. Dias, J. Oliver, J. Lemos, O. Lloberas-Valls
    Engineering Fracture Mechanics (2016). Vol. 154, pp. 288-310 (Preprint)

    Abstract
    This work investigates tensile crack propagation in concrete gravity dams by using some recently developed numerical techniques (crack-path field and strain injection techniques). [...]

  • O. Lloberas-Valls, D. Rixen, A. Simone, L. Sluys
    Computer Methods in Applied Mechanics and Engineering (2012). Vol. 225-228, pp. 177-196

    Abstract
    Micro-to-macro connection techniques constitute a key ingredient in the formulation of multiscale strategies. In this contribution several connection methods are explored [...]

  • O. Lloberas-Valls, D. Rixen, A. Simone, L. Sluys
    International Journal for Numerical Methods in Engineering (2012). Vol. 89 (11), pp. 1337-1366

    Abstract
    A hybrid multiscale framework is presented, which processes the material scales in a concurrent manner, borrowing features from hierarchical multiscale methods. The framework [...]

  • V. Nguyen, O. Lloberas-Valls, L. Sluys, M. Stroeven
    International Journal for Numerical Methods in Engineering (2012). Vol. 89 (2), pp. 192-226 (Preprint)

    Abstract
    A computational homogenization procedure for cohesive and adhesive crack modeling of materials with a heterogeneous microstructure has been recently presented in Computer [...]

  • O. Lloberas-Valls, D. Rixen, A. Simone, L. Sluys
    Computer Methods in Applied Mechanics and Engineering (2011). Vol. 200 (13-16), pp. 1577-1590

    Abstract
    This paper describes a computational tool for the efficient study of failure in brittle heterogeneous materials. By means of several examples, it is demonstrated that [...]

  • V. Nguyen, O. Lloberas-Valls, M. Stroeven, L. Sluys
    Computer Methods in Applied Mechanics and Engineering (2011). Vol. 200 (9-12), pp. 1220-1236

    Abstract
    The existence of a representative volume element (RVE) for a class of quasi-brittle materials having a random heterogeneous microstructure in tensile, shear and mixed mode [...]

  • V. Nguyen, O. Lloberas-Valls, M. Stroeven, L. Sluys
    Computer Methods in Applied Mechanics and Engineering (2010). Vol. 199 (45-48), pp. 3028-3038

    Abstract
    The concept of the representative volume element (RVE) for softening materials is revised in this contribution. It is demonstrated by means of numerical simulations that there [...]

  • A. Schäfers, A. Gens, A. Rodríguez-Dono
    Environmental geotechnics (2020). Vol. 7 (1), pp. 59-71

    Abstract
    Previous studies on the modelling of coupled thermo-hydro-mechanical (THM) processes in bentonite-based engineered barrier systems (EBSs) showed the sensitivity of the output [...]

  • F. Cotecchia, S. Guglielmi, F. Cafaro, A. Gens
    Géotechnique Letters (2019). Vol. 9 (4), pp. 361-368

    Abstract
    An investigation of the microstructural features of a high-plasticity clay, in both its natural conditions and reconstituted in the laboratory, is described. Scanning [...]

  • F. Altuhafi, R. Jardine, V. Georgiannou, W. Moinet, M. Ciantia, M. Arroyo, A. Gens
    Géotechnique (2019). Vol. 69 (11), pp. 1029-1030

  • M. Ciantia, M. Arroyo, C. O'Sullivan, A. Gens
    Acta Geotechnica (2019). Vol. 14 (5), pp. 1337-1356

    Abstract
    In granular soils grain crushing reduces dilatancy and stress obliquity enhances crushability. These are well-supported specimen-scale experimental observations. In principle, [...]

  • S. Finsterle, B. Lanyon, M. Akesson, A. Gens
    Geological Society, London, special publications (2019). Vol. 482, pp. 261-283

    Abstract
    Nuclear waste disposal in geological formations relies on a multi-barrier concept that includes engineered components – which, in many cases, include a bentonite buffer [...]

  • N. Zhang, M. Arroyo, M. Ciantia, A. Gens, J. Butlanska
    Computers and Geotechnics (2019). Vol. 111, pp. 277-289

    Abstract
    The virtual calibration chamber technique, based on the discrete element method, is here applied to study the standard penetration test (SPT). A macro-element approach is [...]

  • R. Rorato, M. Arroyo, E. Andò, A. Gens
    Engineering Geology (2019). Vol. 254, pp. 43-53

    Abstract
    The sphericity of a grain should measure the similitude of its shape with that of a sphere. Sphericity is a shape descriptor of long-standing interest for sedimentology. [...]

  • A. Gens
    Geomechanics for energy and the environment (2019). Vol. 17, pp. 1-2

    Abstract
    Argillaceous rocks and expansive clays play a key role in many scenarios of the deep geological disposal of nuclear waste.

  • M. Ciantia, M. Arroyo, C. O'Sullivan, A. Gens, T. Liu
    Géotechnique (2019). Vol. 69 (1), pp. 1-15 (Preprint)

    Abstract
    Granular materials reach critical states upon shearing. The position and shape of a critical state line (CSL) in the compression plane are important for constitutive models, [...]

  • S. Conesa, M. Mánica, A. Gens, Y. Huang
    Geomechanics and Geoengineering (2019). Vol. 14 (1), pp. 18-29

    Abstract
    The undrained stability of slopes in anisotropic fine-grained soils is studied in this paper using the finite element method (FEM). A constitutive model is presented, able [...]