Now showing items 1-12 of 12

    • A consistent relaxation of optimal design problems for coupling shape and topological derivatives 

      Amstutz, Samuel; Dapogny, Charles; Ferrer Ferré, Àlex (2018-09)
      Article
      Open Access
      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 problem, allowing for the presence of ‘grayscale’ ...
    • Approximating the Basset force by optimizing the method of van Hinsberg et al. 

      Casas González, Guillermo; Ferrer Ferré, Àlex; Oñate Ibáñez de Navarra, Eugenio (2018-01)
      Article
      Open Access
      In this work we put the method proposed by van Hinsberg et al. [29] to the test, highlighting its accuracy and efficiency in a sequence of benchmarks of increasing complexity. Furthermore, we explore the possibility of ...
    • Demonstration of reconfigurable virtual data center networks enabled by OPS with QoS guarantees 

      Miao, Wang; Peng, Shuping; Spadaro, Salvatore; Bernini, Giacomo; Agraz Bujan, Fernando; Ferrer Ferré, Àlex; Perelló Muntan, Jordi; Zervas, Georgios; Nejabati, Reza; Ciulli, Nicola; Simeonidou, Dimitra; Dorren, Harm; Calabretta, Nicola (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      We demonstrate a reconfigurable virtual datacenter network by utilizing statistical multiplexing offered by scalable and flow-controlled optical switching system. Results show QoS guarantees by the priority assignment and ...
    • Dimensional hyper-reduction of nonlinear finite element models via empirical cubature 

      Hernández Ortega, Joaquín Alberto; Caicedo Silva, Manuel Alejandro; Ferrer Ferré, Àlex (2017-01)
      Article
      Open Access
      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”), of nonlinear parameterized finite element (FE) models. The ...
    • Multi-scale topological design of structural materials : an integrated approach 

      Ferrer Ferré, Àlex (Universitat Politècnica de Catalunya, 2017-05-26)
      Doctoral thesis
      Open Access
      The present dissertation aims at addressing multiscale topology optimization problems. For this purpose, the concept of topology derivative in conjunction with the computational homogenization method is considered. In ...
    • On multi-scale computational design of structural materials using the topological derivative 

      Oliver Olivella, Xavier; Ferrer Ferré, Àlex; Cante Terán, Juan Carlos; Giusti, Sebastian Miguel; Lloberas Valls, Oriol (Springer, 2017)
      Part of book or chapter of book
      Restricted access - publisher's policy
      This book brings together some 20 chapters on state-of-the-art research in the broad field of computational plasticity with applications in civil and mechanical engineering, metal forming processes, geomechanics, nonlinear ...
    • On multi-scale structural topology optimization and material design 

      Ferrer Ferré, Àlex; Cante Terán, Juan Carlos; Oliver Olivella, Xavier (Associação Portuguesa de Mecânica Teórica, Aplicada e Computacional (APMTAC), 2015)
      Conference report
      Restricted access - publisher's policy
      Computational material design has gained considerable interest, along the last years, in the computational mechanics community. Although most of the current approaches focus on one-scale structural optimization, this work ...
    • SIMP-ALL: a generalized SIMP method based on the topological derivative concept 

      Ferrer Ferré, Àlex (John Wiley & sons, 2019-10-19)
      Article
      Open Access
      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, is based on regularizing the problem and proposing ...
    • The domain interface method in non-conforming domain decomposition multifield problemsdomain decomposition multifield problems 

      Lloberas Valls, Oriol; Cafiero, Mailhyn E.; Cante Terán, Juan Carlos; Ferrer Ferré, Àlex; Oliver Olivella, Xavier (2016-12)
      Article
      Open Access
      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 domain decomposition technique consists in a ...
    • Topological sensitivity analysis in heterogeneous anisotropic elasticity problem: theoretical and computational aspects 

      Giusti, Sebastian Miguel; Ferrer Ferré, Àlex; Oliver Olivella, Xavier (2016-11)
      Article
      Open Access
      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 an analytical closed-form of the topological ...
    • Two-scale topology optimization in computational material design: an integrated approach 

      Ferrer Ferré, Àlex; Cante Terán, Juan Carlos; Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier (John Wiley & Sons, 2018-04)
      Article
      Open Access
      In this work, a new strategy for solving multiscale topology optimization problems is presented. An alternate direction algorithm and a precomputed offline microstructure database (Computational Vademecum) are used to ...
    • Vademecum-based approach to multi-scale topological material design 

      Ferrer Ferré, Àlex; Oliver Olivella, Xavier; Cante Terán, Juan Carlos; Lloberas Valls, Oriol (Springer, 2016-12)
      Article
      Open Access
      The work deals on computational design of structural materials by resorting to computational homogenization and topological optimization techniques. The goal is then to minimize the structural (macro-scale) compliance by ...