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 ...
    • Geomechanics of shale repositories: mechanical behavior and modeling 

      Mánica Malcom, Miguel Ángel; Ruiz Restrepo, Daniel Felipe; Vaunat, Jean; Gens Solé, Antonio (John Wiley & sons, 2020)
      Part of book or chapter of book
      Restricted access - publisher's policy
      This chapter presents an overview of modeling frameworks available within the theory of elastoplasticity and able to capture main features of shale behavior including: yield under compression, failure under deviatoric ...
    • Hydro-mechanical analysis of expansive clays : constitutive and numerical modelling. 

      Ruiz Restrepo, Daniel Felipe (Universitat Politècnica de Catalunya, 2020-06-12)
      Doctoral thesis
      Open Access
      Bentonite-based materials are being currently considered in several countries as a backfill component in the multi-barrier concept for deep geological disposal of radioactive waste. The bentonite barrier fulfils several ...
    • 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 ...
    • Thermo-mechanical analysis of the stability of a rock-cliff under climatic actions 

      Ruiz Restrepo, Daniel Felipe (Universitat Politècnica de Catalunya, 2013-01-10)
      Master thesis
      Open Access
      [ANGLÈS] This master thesis deals with the numerical analysis of the response of a rock cliff that presents recurrent instabilities as the results of the effect the climatic actions. Because the cliff is located above an ...