Enviaments recents

  • Geometric derivation of the microscopic stress: a covariant central force decomposition 

    Torres Sánchez, Alejandro; Vanegas, Juan Manuel; Arroyo Balaguer, Marino (2016-08)
    Article
    Accés restringit per política de l'editorial
    We revisit the derivation of the microscopic stress, linking the statistical mechanics of particle systems and continuum mechanics. The starting point in our geometric derivation is the Doyle-Ericksen formula, which states ...
  • An equilibrated fluxes approach to the certified descent algorithm for shape optimization using conforming finite element and discontinuous Galerkin discretizations 

    Giacomini, Matteo (2017-09-07)
    Article
    Accés restringit per política de l'editorial
    The certified descent algorithm (CDA) is a gradient-based method for shape optimization which certifies that the direction computed using the shape gradient is a genuine descent direction for the objective functional under ...
  • Towards the modelling of ageing and atherosclerosis effects in ApoE-/- mice aortic tissue 

    Waffenschmidt, T., Tobias; Cilla, Myriam; Sáez Viñas, Pablo; Pérez, Marta M.; Menzel, Andreas; Peña, E. (2016-08-16)
    Article
    Accés obert
    The goal of this work consists in a quantitative analysis and constitutive modelling of ageing processes associated to plaque formation in mice arteries. Reliable information on the characteristic evolution of pressure–stretch ...
  • Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures 

    Ruiz Gironès, Eloi; Oliver Serra, Albert; Socorro Marrero, Guillermo Valentín; Cascón Barbero, José Manuel; Escobar Sánchez, José M.; Montenegro Armas, Rafael; Sarrate Ramos, Josep (John Wiley & Sons, 2018)
    Article
    Accés restringit per política de l'editorial
    In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated ...
  • 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 ...
  • 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 ...

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