Enviaments recents

  • A non-intrusive proper generalized decomposition scheme with application in biomechanics 

    Zou, Xi; Conti, Michele; Díez, Pedro; Auricchio, Ferdinando (John Wiley & Sons, 2017-09-07)
    Article
    Accés restringit per política de l'editorial
    Proper generalized decomposition (PGD) is often used for multiquery and fast-response simulations. It is a powerful tool alleviating the curse of dimensionality affecting multiparametric partial differential equations. ...
  • Generalized parametric solutions in Stokes flow 

    Díez, Pedro; Zlotnik, Sergio; Huerta, Antonio (2017-11-01)
    Article
    Accés restringit per política de l'editorial
    Design optimization and uncertainty quantification, among other applications of industrial interest, require fast or multiple queries of some parametric model. The Proper Generalized Decomposition (PGD) provides a separable ...
  • Numerical modelling of multi-phase multi-component reactive transport in the Earth's interior 

    Oliveira, Beñat; Afonso, Juan Carlos; Zlotnik, Sergio; Díez, Pedro (2018-01-01)
    Article
    Accés restringit per política de l'editorial
    We present a conceptual and numerical approach to model processes in the Earth's interior that involve multiple phases that simultaneously interact thermally, mechanically and chemically. The approach is truly multiphase ...
  • AAR-based decomposition method for lower bound limit analysis 

    Muñoz Romero, José; Rabiei, Nima (2015-12-01)
    Article
    Accés obert
    Despite the recent progress in optimisation techniques, finite-element stability analysis of realistic three-dimensional problems is still hampered by the size of the resulting optimisation problem. Current solvers may ...
  • Ferroelectrics as smart mechanical materials 

    Cordero Edwards, Kumara; Domingo Marimon, Neus; Abdollahi Hosnijeh, Amir; Sort Viñas, Jordi; Catalan, Gustau (2017-07-21)
    Article
    Accés restringit per política de l'editorial
    The mechanical properties of materials are insensitive to space inversion, even when they are crystallographically asymmetric. In practice, this means that turning a piezoelectric crystal upside down or switching the ...
  • Coexistence of wrinkles and blisters in supported graphene 

    Zang, Kuan; Arroyo Balaguer, Marino (Elsevier, 2017-07-01)
    Article
    Accés restringit per política de l'editorial
    Blisters induced by gas trapped in the interstitial space between supported graphene and the substrate are commonly observed. These blisters are often quasi-spherical with a circular rim, but polygonal blisters are also ...
  • R-adaptivity in limit analysis 

    Muñoz Romero, José; Hambleton, James; Sloan, Scott (Springer, 2017-10-04)
    Capítol de llibre
    Accés restringit per política de l'editorial
    Direct methods aim to find the maximum load factor that a domain made of a plastic material can sustain before undergoing full collapse. Its analytical solution may be posed as a constrained maximisation problem, which is ...
  • Numerical modeling of erosion using an improvement of the extended finite element method 

    Cottereau, Régis; Díez, Pedro (2011)
    Article
    Accés obert
    We present in this paper a numerical model of the erosion of a soil that accounts for both the flow in the open fluid and the flow of fluid through the porous soil. The interface between the open fluid and the soil is ...
  • The main factors and rules of stress shadow of perpendicular cracks 

    Wang, Daobing; Zhou, Fujian; Ge, Hongkui; Zlotnik, Sergio; Yang, Xiangtong; Peng, Jinlong (2017-07)
    Article
    Accés restringit per política de l'editorial
    Based on elasticity theory, we use numerical Galerkin finite element discretization method and implement Matlab finite element code to simulate “stress shadow” distributions of mutual orthogonal fractures. The principal ...
  • Monitoring a PGD solver for parametric power flow problems with goal-oriented error assessment 

    García Blanco, Raquel; Borzacchiello, Domenico; Chinesta, Francisco; Díez, Pedro (John Wiley & Sons, 2017-08)
    Article
    Accés restringit per política de l'editorial
    The parametric analysis of electric grids requires carrying out a large number of Power Flow computations. The different parameters describe loading conditions and grid properties. In this framework, the Proper Generalized ...
  • A semi-analytical scheme for highly oscillatory integrals over tetrahedra 

    Hospital Bravo, Raúl; Sarrate Ramos, Josep; Díez, Pedro (John Wiley & Sons, 2017-08)
    Article
    Accés restringit per política de l'editorial
    This paper details a semi-analytical procedure to efficiently integrate the product of a smooth function and a complex exponential over tetrahedral elements. These highly oscillatory integrals appear at the core of different ...
  • Experimental numerical correlation of subsystem contributions in the advanced transfer path analysis framework 

    Magrans Fontrodona, Francesc Xavier; Arcas, Kevin; Vicens Rodríguez, Pere; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In a complex vibroacoustic system the overall noise or vibration in a given location is the sum of multiple subsystem contributions. From an experimental perspective, the total noise can be directly measured but not the ...

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