Exploració per autor "Huespe, Alfredo Edmundo"
Ara es mostren els items 27-46 de 53
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Making use of symmetries in the three-dimensional elastic inverse homogenization problem
MÉNDEZ, CARLOS ALBERTO; Podestá, J. M.; Toro, S.; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (2019)
Article
Accés obertThe objective of this paper is the design of three-dimensional elastic metamaterials with periodic microarchitectures. The microarchitectures of these materials are attained by following an inverse design technique jointly ... -
Material design of elastic structures using Voronoi cells
Podestá, J.M.; Méndez, C. G.; Toro, S.; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (John Wiley & sons, 2018-07)
Article
Accés obertNew tools for the design of metamaterials with periodic microarchitectures are presented. Initially, a two-scale material design approach is adopted. At the structure scale, the material effective properties and their ... -
Mesoscopic model to simulate the mechanical behavior of reinforced concrete members affected by corrosion
Sánchez, P.J.; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier; Toro, Sebastian (2010-03)
Article
Accés obertIn this contribution, a finite element methodology devised to simulate the structural deterioration of corroded reinforced concrete members is presented. The proposed numerical strategy has the ability to reproduce many ... -
Model Order Reduction in computational multiscale fracture mechanics
Caicedo Silva, Manuel Alejandro; Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Lloberas Valls, Oriol (2016-09)
Article
Accés obertNowadays, the model order reduction techniques have become an intensive research eld because of the increasing interest in the computational modeling of complex phenomena in multi-physic problems, and its conse- quent ... -
Multi-scale (FE2) analysis of material failure in cement/aggregate-type composite structures
Oliver Olivella, Xavier; Caicedo, Manuel Alejandro; Roubin, Emmanuel; Hernández Ortega, Joaquín Alberto; Huespe, Alfredo Edmundo (CRC, 2014)
Text en actes de congrés
Accés obertThe work propases a FP multiscale approach to computational modeling of material failure in concreteMlike structures, made of cement/aggregate-type composite materials. Keeping the approach in a classical homogenization ... -
Multiscale formulation for material failure accounting for cohesive cracks at the macro and micro scales
Toro, Sebastian; Sánchez, Pablo J.; Blanco, Pedro J.; de Souza Neto, E.; Huespe, Alfredo Edmundo; Feijóo, R.A. (2016-01)
Article
Accés obertThis contribution presents a two-scale formulation devised to simulate failure in materials with heterogeneous micro-structure. The mechanical model accounts for the nucleation of cohesive cracks in the micro-scale domain. ... -
Numerical technique for the 3D microarchitecture design of elastic composites inspired by crystal symmetries
Rossi, N.; Yera, Rolando; MÉNDEZ, CARLOS ALBERTO; Toro, Sebastian; Huespe, Alfredo Edmundo (2020-02)
Article
Accés obertA numerical methodology developed for the microarchitecture design of 3D elastic two-phase periodic composites with effective isotropic properties close to the theoretical bounds is here presented and analyzed. This ... -
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, ...