Exploració per tema "FINITE-ELEMENT-METHOD"

Ara es mostren els items 1-8 de 8

    • A crack-tracking technique for localized cohesive-frictional damage 

      Saloustros, Savvas; Pelà, Luca; Cervera Ruiz, Miguel (2015-12-01)
      Article
      Accés obert
      This paper extends the use of crack-tracking techniques within the smeared crack approach for the numerical simulation of cohesive-frictional damage on quasi-brittle materials. The mechanical behaviour is described by an ...

    • A medial-axis-based model for propagating cracks in a regularised bulk 

      Tamayo Mas, Elena; Rodríguez Ferran, Antonio (John Wiley & Sons, 2015-02-17)
      Article
      Accés obert
      A new continuous-discontinuous strategy for the simulation of failure is presented. The continuous bulk is regularised by means of a gradient-enhanced damage model, where non-locality is introduced at the level of ...

    • A recovery-explicit error estimator in energy norm for linear elasticity 

      Nadal, E.; Díez, Pedro; Ródenas García, Juan José; Tur, M; Fuenmayor, F. J. (2015-04-15)
      Article
      Accés obert
      Significant research effort has been devoted to produce one-sided error estimates for Finite Element Analyses, in particular to provide upper bounds of the actual error. Typically, this has been achieved using residual-type ...

    • An embedded approach for immiscible multi-fluid problems 

      Ryzhakov, Pavel; Jarauta Arabí, Àlex (2015-11-30)
      Article
      Accés obert
      An embedded formulation for the simulation of immiscible multi-fluid problems is proposed. The method is particularly designed for handling gas-liquid systems. Gas and liquid are modeled using the Eulerian and the Lagrangian ...

    • Efficient implementation of Galerkin meshfree methods for large-scale problems with an emphasis on maximum entropy approximants 

      Peco, Christian; Milian, Daniel; Rosolen, Adrian Martin; Arroyo Balaguer, Marino (2015-04-01)
      Article
      Accés obert
      In Galerkin meshfree methods, because of a denser and unstructured connectivity, the creation and assembly of sparse matrices is expensive. Additionally, the cost of computing basis functions can be significant in problems ...

    • Parameter-free, weak imposition of Dirichlet boundary conditions and coupling of trimmed and non-conforming patches 

      Kollmannsberger, Stefan; Oezcan, A; Baiges Aznar, Joan; Ruess, M; Rank, Ernst; Reali, A (John Wiley & Sons, 2015-03-02)
      Article
      Accés obert
      We present a parameter-free domain sewing approach for low-order as well as high-order finite elements. Its final form contains only primal unknowns; that is, the approach does not introduce additional unknowns at the ...

    • Reduced-order subscales for POD models 

      Baiges Aznar, Joan; Codina, Ramon; Idelsohn Barg, Sergio Rodolfo (2015-07-01)
      Article
      Accés obert
      In this work the Reduced-Order Subscales for Proper Orthogonal Decomposition models are presented. The basic idea consists in splitting the full-order solution into the part which can be captured by the reduced-order model ...

    • Stress-accurate Mixed FEM for soil failure under shallow foundations involving strain localization in plasticity 

      Benedetti, Lorenzo; Cervera Ruiz, Miguel; Chiumenti, Michele (2015-03)
      Article
      Accés obert
      The development of slip lines, due to strain localization, is a common cause for failure of soil in many circumstances investigated in geotechnical engineering. Through the use of numerical methods - like finite elements ...