Enviaments recents

  • 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 ...
  • Discrete meso-modeling of steel fiber reinforced concrete: simulation of flexural behavior 

    Pros Parés, Alba; Díez, Pedro; Molins i Borrell, Climent (International Centre for Numerical Methods in Engineering (CIMNE), 2011)
    Text en actes de congrés
    Accés obert
    Concrete provides with a variety of innovative designs, but two characteristics have limited its use: it is brittle and weak under tension. One way to overcome this problem is to add steel fibers into the concrete matrix, ...
  • 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 ...

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