Exploració per autor "Huespe, Alfredo Edmundo"
Ara es mostren els items 34-53 de 53
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On some topics for the numerical simulation of ductile fracture
Sánchez, P J; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (2008-06)
Article
Accés obertIn this work, we analyze some aspects of the macroscopic Gurson–Tvergaard–Needleman (GTN) constitutive model when it is addressed to solve ductile fracture problems by means of numerical simulations: (i) The analytical ... -
On the fracture models determined by the continuum-strong discontinuity approach
Huespe, Alfredo Edmundo; Oliver Olivella, Xavier; Gómez Pulido, M. Dolores; Blanco Ibáñez, Sergio; Linero, D (Springer, 2006-04)
Article
Accés obertThe paper focuses on the Continuum Strong Discontinuity Approach (CSDA) to fracture mechanics, and the traction-separation cohesive laws induced from continuum dissipative models as their projections onto the failure ... -
On the numerical resolution of the discontinuous material bifurcation problem
Oliver, Jose; Huespe, Alfredo Edmundo; Cante Terán, Juan Carlos; Díaz, G. (2010)
Article
Accés restringit per política de l'editorialThe work focuses on the numerical resolution of the discontinuous material bifurcation problem as a relevant ingredient in computational material failure mechanics. The problem consists of finding the conditions for the ... -
On the strong discontinuity approach in finite deformation settings
Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Gómez Pulido, M. Dolores; Samaniego Alvarado, Esteban (John Wiley & sons, 2003-02)
Article
Accés obertTaking the strong discontinuity approach as a framework for modelling displacement discontinuities and strain localization phenomena, this work extends previous results in infinitesimal strain settings to finite deformation ... -
Reduced finite element square techniques (RFE2): towards industrial multiscale fe software
Lloberas Valls, Oriol; Raschi Schaw, Marcelo; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (CIMNE, 2019)
Text en actes de congrés
Accés obertReduced order modeling techniques proposed by the authors are assessed for an industrial case study of a 3D reinforced composite laminate. Essentially, the main dominant strain micro-structural modes are obtained through ... -
Reduced Finite Element square techniques (RFE2): towards industrial multiscale FE software
Lloberas Valls, Oriol; Raschi Schaw, Marcelo; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (International Centre for Numerical Methods in Engineering (CIMNE), 2019)
Text en actes de congrés
Accés obertThe FE2 method has gained a considerable interest within the simulation science community because of its generality and potential. Indeed, multiscale problems with complex micro-structures and constitutive behaviors can ... -
Reduced order modeling strategies for computational multiscale fracture
Oliver Olivella, Xavier; Caicedo Silva, Manuel Alejandro; Huespe, Alfredo Edmundo; Hernández Ortega, Joaquín Alberto; Roubin, Emmanuel (2017-01)
Article
Accés obertThe paper proposes some new computational strategies for affordably solving multiscale fracture problems through a FE2 approach. To take into account the mechanical effects induced by fracture at the microstructure level ... -
Sensitivity of the thermomechanical response of elastic structures to microstructural changes
Fachinotti, Víctor D.; Toro, Sebastian; Sánchez, Pablo J.; Huespe, Alfredo Edmundo (2015-09)
Article
Accés obertThis paper is focused on the analysis of the sensitivity of the thermomechanical response of a macroscopic elastic body to changes that occur at the microstructure. This problem is a key issue in material design. The ... -
Simulación numérica del proceso de fractura en concreto reforzado mediante la metodología de discontinuidades fuertes de continuo. Parte I: formulación
Linero Segrera, Dorian Luis; Oliver Olivella, Xavier; Huespe, Alfredo Edmundo (2010-08-02)
Article
Accés restringit per política de l'editorialEn general, las estructuras de concreto reforzado como vigas, columnas y muros están conformadas por entramados complejos de barras de acero embebidas en una matriz de concreto, las cuales exhiben múltiples fisuras ante ... -
Simulación numérica del proceso de fractura en concreto reforzado mediante la metodología de discontinuidades fuertes de continuo. Parte II: Aplicación a páneles sometidos a cortante
Linero Segrera, Dorian Luis; Oliver Olivella, Xavier; Huespe, Alfredo Edmundo (2010-12)
Article
Accés restringit per política de l'editorialEn este trabajo se presentan los resultados de la simulación numérica del proceso de fractura en páneles de concreto reforzado sometidos a cortante, utilizando un modelo basado en la metodología de discontinuidades fuertes ... -
Stability and robustness issues in numerical modeling of material failure with the strong discontinuity approach
Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Blanco Ibáñez, Sergio; Linero, D L (2006-11)
Article
Accés obertRobustness and stability of the Continuum Strong Discontinuity Approach (CSDA) to material failure are addressed. After identification of lack of symmetry of the finite element formulation and material softening in the ... -
Stabilized mixed finite elements with embedded strong discontinuities for shear band modeling
Sanchez, P J; Sonzogni, Victorio Enrique; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (2006-11)
Article
Accés obertA stabilized mixed finite element with elemental embedded strong discontinuities for shear band modeling is presented. The discrete constitutive model, representing the cohesive forces acting across the shear band, is ... -
Strain injection techniques in dynamic fracture modeling
Lloberas Valls, Oriol; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier; Dias, I.F. (2016-08)
Article
Accés obertA computationally affordable modeling of dynamic fracture phenomena is performed in this study by using strain injection techniques and Finite Elements with Embedded strong discontinuities (E-FEM). In the present research, ... -
Strain localization, strong discontinuities and material fracture: matches and mismatches
Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Dias, I. F. (2012-10)
Article
Accés obertThe 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 of whether the finite element solutions of ... -
Symmetry considerations for topology design in the elastic inverse homogenization problem
Podestá, J.M.; Méndez, C. M.; Toro, Sebastian; Huespe, Alfredo Edmundo (2019-07)
Article
Accés obertAn analysis of the symmetries characterizing the micro-architecture topologies and the elastic material properties is performed. The goal is to elucidate a systematic procedure that facilitates the design of elastic ... -
Theoretical and computational issues in modelling material failure in strong discontinuity scenarios
Oliver Olivella, Xavier; Huespe, Alfredo Edmundo (2004-07)
Article
Accés obertThe 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 in terms of continuum constitutive models ... -
Topology design of 2D and 3D elastic material microarchitectures with crystal symmetries displaying isotropic properties close to their theoretical limits
Yera, Rolando; Rossi, N.; Méndez, Carlos Alberto; Huespe, Alfredo Edmundo (Elsevier, 2020-03)
Article
Accés obertThis paper evaluates the effect that different imposed crystal symmetries have on the topology design of two-phase isotropic elastic composites ruled by the target of attaining extreme theoretical properties. Extreme ... -
Towards shock absorbing hyperelastic metamaterial design. (I) Macroscopic scale: computational shock-capturing
Núñez Labiella, Alejandro; Cante Terán, Juan Carlos; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (2022-04)
Article
Accés obertThe work explores the computational modeling of propagating shocks in hyperelastic materials to be considered in the context of numerical analysis and design of mechanical energy absorbing materials. The computational ... -
Two-dimensional modeling of material failure in reinforced concrete by means of a continuum strong discontinuity approach
Oliver Olivella, Xavier; Linero, D L; Huespe, Alfredo Edmundo; Manzoli, O L (2008-01)
Article
Accés obertThe paper presents a new methodology to model material failure, in two-dimensional reinforced concrete members, using the Continuum Strong Discontinuity Approach (CSDA). The mixture theory is used as the methodological ... -
Vulnerability analysis of large concrete dams using the continuum strong discontinuity approach and neural networks
Papadrakakis, Manolis; Papadopoulos, V; Lagaros, N D; Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Sánchez, Pau (2008-05)
Article
Accés obertProbabilistic analysis is an emerging field of structural engineering which is very significant in structures of great importance like dams, nuclear reactors etc. In this work a Neural Networks (NN) based Monte Carlo ...