• A phenomenological cohesive model of ferroelectric fatigue 

    Arias Vicente, Irene; Serebrinsky, S; Ortiz, Michael (2006-02)
    Article
    Accés obert
    We develop a phenomenological model of electro-mechanical ferroelectric fatigue based on a ferroelectric cohesive law that couples mechanical displacement and electric-potential discontinuity to mechanical tractions and ...
  • Experimental validation of large-scale simulations of dynamic fracture along weak planes 

    Chalivendra, V. B.; Hong, Soonsung; Arias Vicente, Irene; Knap, Jaroslaw; Rosakis, Ares; Ortiz, Michael (2009-07)
    Article
    Accés obert
    A well-controlled and minimal experimental scheme for dynamic fracture along weak planes is specifically designed for the validation of large-scale simulations using cohesive finite elements. The role of the experiments ...
  • Local maximum-entropy approximation schemes: a seamless bridge between finite elements and meshfree methods 

    Arroyo Balaguer, Marino; Ortiz, Michael (Wiley and Sons, 2006-03)
    Article
    Accés obert
    We present a one-parameter family of approximation schemes, which we refer to as local maximum-entropy approximation schemes, that bridges continuously two important limits: Delaunay triangulation and maximum-entropy ...
  • Modelo de fuerzas interatómicas para el grafeno a partir del potencial AIREBO 

    Ariza, María Pilar; Ventura, C.; Ortiz, Michael (Universitat Politècnica de Catalunya. CIMNE, 2011)
    Article
    Accés obert
    In view of the influence that topological defects have on the thermal and electrical properties of graphene, and given the pivotal role that such properties play in potential applications of graphene as a building block ...
  • Numerical modelling and experimental validation of dynamic fracture events along weak planes 

    Arias Vicente, Irene; Knap, Jaroslaw; Chalivendra, V. B.; Hong, Soonsung; Ortiz, Michael; Rosakis, Ares (2007-08)
    Article
    Accés obert
    The conceptual simplicity and the ability of cohesive finite element models to describe complex fracture phenomena makes them often the approach of choice to study dynamic fracture. These models have proven to reproduce ...
  • Smooth, second order, non-negative meshfree approximants selected by maximum entropy 

    Cyron, Christian J.; Arroyo Balaguer, Marino; Ortiz, Michael (Wiley and Sons, 2009-05)
    Article
    Accés obert
    We present a family of approximation schemes, which we refer to as second-order maximum-entropy (max-ent) approximation schemes, that extends the first-order local max-ent approximation schemes to second-order consistency. ...