Enviaments recents

  • 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 ...
  • 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 ...
  • A subsystem identification method based on the path concept with coupling strength estimation 

    Magrans Fontrodona, Francesc Xavier; Poblet-Puig, Jordi; Rodríguez Ferran, Antonio (2018-02)
    Article
    Accés restringit per política de l'editorial
    For complex geometries, the definition of the subsystems is not a straightforward task. We present here a subsystem identification method based on the direct transfer matrix, which represents the first-order paths. The key ...
  • Catalogue of vibration reduction index formulas for heavy junctions based on numerical simulations 

    Poblet-Puig, Jordi; Guigou-Carter, Catherine (2017-07)
    Article
    Accés restringit per política de l'editorial
    The vibration reduction index (Kij) is a key parameter in the prediction of flanking transmissions according to the EN-12354 standard. Formulas for the evaluation of Kij in L, T and X junctions that depend on the mass ratio ...
  • Coupled mantle dripping and lateral dragging controlling the lithosphere structure of the NW-Moroccan margin and the Atlas Mountains: A numerical experiment 

    Zlotnik, Sergio; Jiménez-Munt, Ivone; Fernández Gómez, Manel (2014-02-15)
    Article
    Accés obert
    Recent studies integrating gravity, geoid, surface heat flow, elevation and seismic data indicate a prominent lithospheric mantle thickening beneath the NW-Moroccan margin (LAB >200 km-depth) followed by thinning beneath ...
  • Flight and passenger delay assignment optimization strategies 

    Villardi de Montlaur, Adeline de; Delgado Muñoz, Luis (2017-08-01)
    Article
    Accés restringit per política de l'editorial
    This paper compares different optimization strategies for the minimization of flight and passenger delays at two levels: pre-tactical, with on-ground delay at origin, and tactical, with airborne delay close to the destination ...
  • Use of wiris quizzes in an online calculus course 

    Calm, Remei; Masià, Ramon; Olivé, Carme; Parés Mariné, Núria; Pozo Montero, Francesc; Ripoll, Jordi; Sancho Vinuesa, Teresa (Omnia Publisher SL (OmniaScience), 2017)
    Article
    Accés obert
    Calculus courses often present a large number of difficulties to undergraduate students of scientific studies, especially in engineering degrees. These difficulties are sometimes related to teaching and assessment strategies. ...

Mostra'n més