Now showing items 1-15 of 15

    • 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 simplified approach to account for directionality effects on 2D dynamic soil-structure interaction analysis 

      Pinzón Ureña, Luis; Pujades Beneit, Lluís; Alva Bañuelos, Rodrigo Esteban; Mánica Malcom, Miguel Ángel (CRC Press, 2019)
      Conference report
      Restricted access - publisher's policy
      In this study, a simplified approach to account for directionality effects on twodimensional (2D) dynamic soil-structure interaction analyses (DSSI) is proposed. When an earthquake is recorded, the direction with the maximum ...
    • 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 cone penetration in brittle liquefiable soils 

      Monforte Vila, Lluís; Gens Solé, Antonio; Arroyo Alvarez de Toledo, Marcos; Mánica Malcom, Miguel Ángel; Carbonell Puigbó, Josep Maria (Elsevier, 2021-06)
      Article
      Restricted access - publisher's policy
      The paper presents a comprehensive set of simulations of the cone penetration test with pore pressure measurements (CPTu test) in brittle, potentially liquefiable, soils using advanced numerical techniques. The large ...
    • 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 ...
    • 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 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 ...
    • Numerical simulation of underground excavations in an indurated clay using non-local regularisation. Part 1: formulation and base case 

      Mánica Malcom, Miguel Ángel; Gens Solé, Antonio; Vaunat, Jean; Armand, Gilles; Vu, Minh-Ngoc (2021-06)
      Article
      Restricted access - publisher's policy
      The paper presents the numerical simulation of an underground excavation in the Callovo-Oxfordian argillaceous formation, performed in the Meuse/Haute-Marne underground research laboratory, within the context of deep ...
    • Numerical simulation of underground excavations in an indurated clay using non-local regularisation. Part 2: Sensitivity analysis 

      Mánica Malcom, Miguel Ángel; Gens Solé, Antonio; Vaunat, Jean; Armand, Gilles; Vu, Minh-Ngoc (2021-09)
      Article
      Restricted access - publisher's policy
      A sensitivity study is presented to evaluate the influence of different parameters on the simulation of an underground excavation in the Callovo-Oxfordian (COx) argillaceous formation performed in the Meuse/Haute-Marne ...