Now showing items 1-11 of 11

  • A domain decomposition approach to multiscale analysis for structures with softening materials 

    Lloberas Valls, Oriol; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J. (2009)
    Conference report
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    In this contribution we present a domain decomposition framework for the multiscale analysis of softening materials. In particular we focus on the finite element tearing and interconnecting (FETI) technique implemented in ...
  • Applications of domain decomposition techniques for the multiscale modeling of softening materials 

    Lloberas Valls, Oriol; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J. (2009)
    Conference report
    Open Access
    In this contribution we describe a methodology for the study of softening brittle materials at different scales of observation. The goal is to account for a higher resolution at those areas that undergo the non-linear ...
  • Concurrent multiscale analysis of heterogeneous materials 

    Lloberas Valls, Oriol; Everdij, Frank P. X.; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J. (Vienna University of Technology, 2012)
    Conference report
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    Concurrent multiscale analysis of quasi-brittle heterogeneous materials such as concrete and rock is conducted employing non-overlapping domain decomposition techniques. Initially, a coarse discretization with effective ...
  • Domain decomposition and parallel direct solvers as an adaptive multiscale strategy for damage simulation in materials 

    Everdij, Frank P. X.; Lloberas Valls, Oriol; Simone, Angelo; Rixen, Daniel J.; Sluys, Lambertus J. (Springer, 2016)
    Conference report
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    Understanding physical phenomena of heterogeneous materials is an ongoing active research field in the structural design of buildings and roads. The failure analysis of quasi-brittle materials such as concrete is a particular ...
  • Enhanced domain decomposition techniques for the modeling of softening materials 

    Lloberas Valls, Oriol; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J.; Stroeven, Martijn (2009)
    Conference report
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    In this study a FETI: Finite Element Tearing and Interconnecting [1] technique is adopted and exploited for the efficient and accurate modeling of softening materials such as concrete and rock. A fie scale analysis in which ...
  • Multiscale analysis of damage using dual and primal domain decomposition techniques 

    Lloberas Valls, Oriol; Everdij, Frank P. X.; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J. (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
    Conference report
    Open Access
    In this contribution, dual and primal domain decomposition techniques are studied for the multiscale analysis of failure in quasi-brittle materials. The multiscale strategy essentially consists in decomposing the structure ...
  • Multiscale analysis of heterogeneous brittle materials using domain decomposition techniques 

    Lloberas Valls, Oriol; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J. (2010)
    Conference report
    Restricted access - publisher's policy
    In this contribution we present a multiscale framework for the analysis of brittle materials based on domain decomposition approaches. In particular, the FETI (Finite Element Tearing and Interconnecting) [1] method is ...
  • Multi-scale modeling of softening materials 

    Lloberas Valls, Oriol; Simone, Angelo; Sluys, Lambertus J. (International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), 2008)
    Conference report
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    This paper presents an assessment of a two-scale framework for the study of softening materials such as concrete. The procedure is based on a hierarchical Finite Element (FE) scheme in which computations are performed both ...
  • Objective multiscale analysis of random heterogeneous materials 

    Lloberas Valls, Oriol; Everdij, Frank P. X.; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J. (2013)
    Conference report
    Open Access
    The multiscale framework presented in [1, 2] is assessed in this contribution for a study of random heterogeneous materials. Results are compared to direct numerical simulations (DNS) and the sensitivity to user-defined ...
  • On micro-to-macro connections in strong coupling multiscale modeling of softening materials 

    Lloberas Valls, Oriol; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J. (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2011)
    Conference report
    Open Access
    In this contribution we describe a methodology for the multiscale analysis of heterogeneous quasi-brittle materials. The algorithm is based on the finite element tearing and interconnecting FETI [1] method cast in a ...
  • The role of domain decomposition techniques for the study of heterogeneous quasi-brittle materials 

    Lloberas Valls, Oriol; Rixen, Daniel J.; Simone, Angelo; Sluys, Lambertus J. (CRC Press, 2010)
    Conference report
    Restricted access - publisher's policy
    We focus on the analysis of fracture in quasi-brittle materials by exploiting the potential of domain decomposition techniques. More specifically, we restrict our attention to the FETI (Finite Element Tearing and ...