Now showing items 13-24 of 191

    • Simulation of construction of RCC dams. I: temperature and aging 

      Cervera Ruiz, Miguel; Oliver Olivella, Xavier; Prato, Tomás (2000-09)
      Article
      Open Access
      The increasing number of roller compacted concrete (RCC) dams being built around the world demands accurate methodologies for the realistic short- and long-term evaluations of the risk of thermally induced cracking in these ...
    • Strong discontinuities and continuum plasticity models: the strong discontinuity approach 

      Oliver Olivella, Xavier; Cervera Ruiz, Miguel; Manzoli, O (1999-03)
      Article
      Open Access
      The paper presents the Strong Discontinuity Approach for the analysis and simulation of strong discontinuities in solids using continuum plasticity models. Kinematics of weak and strong discontinuities are discussed, and ...
    • On the discrete constitutive models induced by strong discontinuity kinematics and continuum constitutive equations 

      Oliver Olivella, Xavier (2000-11)
      Article
      Open Access
      On the basis of continuum constitutive models (stress vs. strain), the introduction of strong discontinuity kinematics (considering jumps in the displacement fields across a discontinuity interface) induces projected ...
    • From continuum mechanics to fracture mechanics: the strong discontinuity approach 

      Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Gómez Pulido, M. Dolores; Chaves, E (2002-01)
      Article
      Open Access
      The paper deals with the strong discontinuity approach and shows the links with the decohesive fracture mechanics provided by that approach. On the basis of 1D continuum damage models it is shown that, by introducing some ...
    • On the strong discontinuity approach in finite deformation settings 

      Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Gómez Pulido, M. Dolores; Samaniego Alvarado, Esteban (John Wiley & sons, 2003-02)
      Article
      Open Access
      Taking the strong discontinuity approach as a framework for modelling displacement discontinuities and strain localization phenomena, this work extends previous results in infinitesimal strain settings to finite deformation ...
    • A study on finite elements for capturing strong discontinuities 

      Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Samaniego Alvarado, Esteban (John Wiley & sons, 2003-04)
      Article
      Open Access
      The work focuses on the presently existing families of finite elements with embedded discontinuities and explores the possibilities of obtaining symmetric statically consistent finite elements that alleviate the stress-locking ...
    • Theoretical and computational issues in modelling material failure in strong discontinuity scenarios 

      Oliver Olivella, Xavier; Huespe, Alfredo Edmundo (2004-07)
      Article
      Open Access
      The paper deals with several aspects related to numerical modelling of material failure in strong discontinuity settings: (a) the onset and development of local material failure in terms of continuum constitutive models ...
    • Modeling material failure in concrete structures under cyclic actions 

      Faria, R; Oliver Olivella, Xavier; Cervera Ruiz, Miguel (2004-12)
      Article
      Open Access
      A constitutive model devised for the analysis of concrete structures, and suitable for generic two- or three-dimensional applications, is presented and validated. For plain concrete a tension-compression distinguishing ...
    • Continuum approach to the numerical simulation of material failure in concrete 

      Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Samaniego, E; Chaves, E W V (2004-06)
      Article
      Open Access
      Some new aspects of the continuum strong discontinuity approach (CSDA) to model material failure in geomaterials are addressed. A new global algorithm, for tracking multiple crack lines/surfaces in 2D/3D cases is proposed. ...
    • Continuum approach to material failure in strong discontinuity settings 

      Oliver Olivella, Xavier; Huespe, Alfredo Edmundo (2004-07)
      Article
      Open Access
      The paper focuses the numerical modelling of material failure in a strong discontinuity setting using a continuum format. Displacement discontinuities, like fractures, cracks, slip lines, etc., are modelled in a strong ...
    • On numerical simulation of powder compaction process: powder transfer modelling and characterisation 

      Cante Terán, Juan Carlos; Oliver Olivella, Xavier; Gonzalez, C; Calero Martínez, José Antonio; Benitez, F (2005-08)
      Article
      Open Access
      A numerical model for the powder transfer stage in powder metallurgy cold compaction processes, and the corresponding material characterisation procedure, are proposed. They have been designed on the basis of the following ...
    • Stabilized mixed finite elements with embedded strong discontinuities for shear band modeling 

      Sanchez, P J; Sonzogni, Victorio Enrique; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (2006-11)
      Article
      Open Access
      A stabilized mixed finite element with elemental embedded strong discontinuities for shear band modeling is presented. The discrete constitutive model, representing the cohesive forces acting across the shear band, is ...