Exploració per autor "Huespe, Alfredo Edmundo"Més informació

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    • High performance reduced order modeling techniques based on optimal energy quadrature: application to geometrically non-linear multiscale inelastic material modeling 

      Caicedo Silva, Manuel Alejandro; Mroginski, Javier L.; Toro, Sebastian; Raschi Schaw, Marcelo; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (2019-09)
      Article
      Accés obert
      A High-Performance Reduced-Order Model (HPROM) technique, previously presented by the authors in the context of hierarchical multiscale models for non linear-materials undergoing infinitesimal strains, is generalized to ...

    • High performance reduction technique for multiscale finite element modeling (HPR-FE2): towards industrial multiscale FE software 

      Raschi Schaw, Marcelo; Lloberas Valls, Oriol; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (2021-03)
      Article
      Accés obert
      The authors have shown in previous contributions that reduced order modeling with optimal cubature applied to finite element square (FE) techniques results in a reliable and affordable multiscale approach, the HPR-FE2 ...

    • High-performance model order reduction techniques in non-linear multiscale fracture problems 

      Caicedo Silva, Manuel Alejandro; Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Lloberas Valls, Oriol (2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work presents a strategy to diminish the computational cost of a hierarchical (FE2) multi-scale computational homogenization approach for fracture problems is presented. Focusing on concepts as Reduced Order Modeling ...

    • High-performance model reduction procedures in multiscale simulations 

      Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Caicedo, Manuel Alejandro (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2012-03-01)
      Llibre
      Accés obert
      Technological progress and discovery and mastery of increasingly sophisticated structural materials have been inexorably tied together since the dawn of history. In the present era — the so-called Space Age —-, the prevailing ...

    • High-performance model reduction techniques in computational multiscale homogenization 

      Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Caicedo Silva, Manuel Alejandro; Cante Terán, Juan Carlos (2014-07-01)
      Article
      Accés obert
      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 shape functions is obtained using a ...

    • 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 obert
      The 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 obert
      New 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 obert
      In 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 obert
      Nowadays, 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 obert
      The 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 obert
      This 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 obert
      A 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 obert
      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 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 obert
      The 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'editorial
      The 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 obert
      Taking 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 obert
      Reduced 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 obert
      The 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 obert
      The 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 obert
      This 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 ...