Now showing items 1-10 of 10

    • A cross-anisotropic formulation for elasto-plastic models 

      Mánica Malcom, Miguel Ángel; Gens Solé, Antonio; Vaunat, Jean; Ruiz Restrepo, Daniel Felipe (2016-06)
      Article
      Restricted access - publisher's policy
      A cross-anisotropic formulation for elasto-plastic constitutive models based on a non-uniform scaling of the stress tensor is described. Taking advantage of the material symmetries characterising cross-anisotropy, only two ...
    • A time-dependent anisotropic model for argillaceous rocks: application to an underground excavation in Callovo-Oxfordian claystone 

      Mánica Malcom, Miguel Ángel; Gens Solé, Antonio; Vaunat, Jean; Ruiz Restrepo, Daniel Felipe (2017-05)
      Article
      Open Access
      The paper presents a constitutive model for argillaceous rocks, developed within the framework of elastoplasticity, that includes a number of features that are relevant for a satisfactory description of their hydromechanical ...
    • Analysis of strain localization with a non-local plasticity model 

      Mánica Malcom, Miguel Ángel; Gens Solé, Antonio; Vaunat, Jean; Ruiz Restrepo, Daniel Felipe (2017)
      Conference report
      Open Access
      Strain localization can be defined as the accumulation of deformations in narrow zones, in the form of shear bands or cracks, commonly observed in several geomaterials like concrete, rocks, dense sands, or stiff fine-grained ...
    • Analysis of the hydration of an unsaturated seal 

      Ruiz Restrepo, Daniel Felipe; Vaunat, Jean; Gens Solé, Antonio; Mánica Malcom, Miguel Ángel (American Society of Civil Engineers (ASCE), 2018)
      Conference report
      Restricted access - publisher's policy
      The paper contains a coupled numerical analysis of the hydration of a potential sealing system for isolating shafts, ramps, and connecting galleries in a deep geological repository for high level nuclear waste. The modeling ...
    • Analysis of underground excavations in argillaceous hard soils : weak rocks 

      Mánica Malcom, Miguel Ángel (Universitat Politècnica de Catalunya, 2018-10-11)
      Doctoral thesis
      Open Access
      Materiales arcillosos rígidos, que se encuentran en la zona de transición entre suelos duros y rocas blandas, están siendo considerados actualmente en varios países como la roca huésped para el almacenamiento geológico ...
    • Hydro-mechanical modelling of an unsaturated seal structure 

      Ruiz Restrepo, Daniel Felipe; Vaunat, Jean; Gens Solé, Antonio; Mánica Malcom, Miguel Ángel (CRC Press, 2018)
      Conference report
      Restricted access - publisher's policy
      The paper contains a coupled numerical analysis of the hydration of a potential sealing system for isolating shafts, ramps and connecting galleries in a deep geological repository for high level nuclear waste. The modelling ...
    • Hydromechanical modelling of a tunnel excavated in argillaceous rock 

      Mánica Malcom, Miguel Ángel; Gens Solé, Antonio; Vaunat, Jean; Ruiz Restrepo, Daniel Felipe (Universität Innsbruck, 2017)
      Conference report
      Restricted access - publisher's policy
      The paper presents selected results from a hydromechanical analysis of an excavation at great depth in argillaceous rock. A constitutive model specifically developed for this type of materials has been used. It incorporates ...
    • Modelling the mechanical behaviour of Callovo-Oxfordian argillite: formulation and application 

      Gens Solé, Antonio; Mánica Malcom, Miguel Ángel; Vaunat, Jean; Ruiz Restrepo, Daniel Felipe (Springer, 2017)
      Conference report
      Restricted access - publisher's policy
      The paper presents a constitutive model for argillaceous rocks, developed within the framework of elastoplasticity, that includes a number of features that are relevant for a satisfactory description of their hydromechanical ...
    • Nonlocal plasticity modelling of strain localisation in stiff clays 

      Mánica Malcom, Miguel Ángel; Gens Solé, Antonio; Vaunat, Jean; Ruíz, Daniel F. (Elsevier, 2018-11)
      Article
      Open Access
      The paper addresses the numerical simulation of strain localisation in stiff clays that exhibit softening behaviour. An elastoplastic constitutive model developed to incorporate key features of stiff clay behaviour is ...
    • Numerical simulation of the undrained stability of slopes in anisotropic fine-grained soils 

      Conesa, Sergi; Mánica Malcom, Miguel Ángel; Gens Solé, Antonio; Huang, Y. (2019-01)
      Article
      Open Access
      The undrained stability of slopes in anisotropic fine-grained soils is studied in this paper using the finite element method (FEM). A constitutive model is presented, able to account for the observed variation of undrained ...