Exploració per tema "Mecànica dels sòls -- Models matemàtics"

Ara es mostren els items 1-15 de 15

    • 3D DEM simulations of CPT in sand 

      Butlanska, Joanna; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The paper contains an overview of the results obtained in a research project exploring the ability of 3D DEM models to reproduce cone penetration in sands. The sand whose behaviour is mimicked by the discrete material ...

    • A 3D temporal evolutionary numerical model of a masonry building in Barcelona subjected to tunnelling subsidence 

      Camós Andreu, Carles; Molins i Borrell, Climent (Aedificatio, 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The aim of this work is to deepen the knowledge of the numerical simulation used in the prediction of building dam age produced by tunnel ling subsidence. This paper analyzes the structural response of a one-storey building ...

    • Breakage and critical state via DEM 

      Ciantia, Matteo Oryem; O'Sullivan, Catherine; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2019)
      Text en actes de congrés
      Accés obert
      Discrete-element simulations are used to explore the relation between breakage-induced grading evolution and the critical state line position on the compression plane. An efficient model of particle breakage is applied to ...

    • Contributions to the continuum modelling of strong discontinuities in two-dimensional solids 

      Samaniego Alvarado, Esteban (Universitat Politècnica de Catalunya, 2003-03-28)
      Tesi
      Accés obert
      El estudio de la mecánica computacional de fallo ha ganado creciente popularidad en los últimos años. Modelizar el comportamiento poscrítico de estructuras puede alcanzar un grado elevado de complejidad, debido a la ...

    • DEM modelling of dynamic penetration in granular material 

      Zhang, Ming; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Ciantia, Matteo Oryem (CRC Press, 2018)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Dynamic penetration has been widely employed in some site investigation procedures and for the installation of driven piles. A 3-dimensional discrete element method model has been developed to simulate dynamic rod penetration ...

    • Estimation of Parameters in Geotechnical Backanalysis: I. Maximum Likelihood Approach 

      Ledesma Villalba, Alberto; Gens Solé, Antonio; Alonso Pérez de Agreda, Eduardo (Elsevier, 1996)
      Article
      Accés obert
      The estimation of soil and rock parameters based on field instrumentation data is a common procedure in geomechanics. The use of system identification and optimization techniques allows the performance of this type of ...

    • Expansive bentonite–sand mixtures in cyclic controlled-suction drying and wetting 

      Alonso Pérez de Agreda, Eduardo; Romero Morales, Enrique Edgar; Hoffmann Jauge, Christian; García Escudero, Enrique (Elsevier, 2005)
      Article
      Accés obert
      Expansive clay buffers in radioactive waste disposal designs experience cyclic drying and wetting paths during different stages of their design life. Clayey soils subjected to these processes develop swelling and shrinkage ...

    • Explicit finite deformation stress integration of the elasto-plastic constitutive equations 

      Monforte Vila, Lluís; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Carbonell Puigbó, Josep Maria (CRC Press Taylor & Francis Group, 2014)
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      In this work, an explicit integration scheme for hyperelastic-based finite strains elasto-plasticity is presented. One step update equations are obtained from the large deformation multiplicative elasto-plasticity theory, ...

    • Exploring the numerical performance of node-based smoothed finite elements in coupled hydro-mechanical problems 

      Monforte Vila, Lluís; Collico, Stefano; Carbonell Puigbó, Josep Maria; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (Elsevier, 2023-08)
      Article
      Accés restringit per política de l'editorial
      Node-based smoothed finite element (NS-FEM) formulations for the coupled hydro-mechanical problem are now becoming popular in soil mechanics, but there has been limited comparative study of their performance. In this work, ...

    • From saturated to unsaturated conditions and vice versa 

      Lloret Cabot, Marti; Wheeler, Simon J.; Pineda Jiménez, Jubert Andrés; Romero Morales, Enrique Edgar; Sheng, Daichao (2018-02)
      Article
      Accés obert
      Representing transitions between saturated and unsaturated conditions, during drying, wetting and loading paths, is a necessary step for a consistent unification between saturated and unsaturated soil mechanics. Transitions ...

    • Image-based calibration of rolling resistance in discrete element models of sand 

      Rorato, Riccardo; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Andò, Edward; Viggiani, Gioacchino (Elsevier, 2021-03)
      Article
      Accés obert
      Models that introduce rolling resistance at the contact are widely employed in simulations using the discrete element method (DEM) to indirectly represent particle shape effects. This approach offers substantial computational ...

    • Low-order stabilized finite element for the full Biot formulation in soil mechanics at finite strain 

      Monforte Vila, Lluís; Navas, Pedro; Carbonell Puigbó, Josep Maria; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (2019-05)
      Article
      Accés obert
      This article presents a novel finite element formulation for the Biot equation using low-order elements. Additionally, an extra degree of freedom is introduced to treat the volumetric locking steaming from the effective ...

    • Multi-scale analysis of cone penetration test (CPT) in a virtual calibration chamber 

      Butlanska, Joanna; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; O'Sullivan, Catherine (2014-01)
      Article
      Accés restringit per política de l'editorial
      A virtual calibration chamber was developed using a three-dimensional (3D) discrete element method (DEM) to perform cone penetration tests (CPTs) on a discrete analogue of Ticino sand. The macroscale response of the DEM ...

    • Parameter calibration for hydro-mechanical modelling using numerical simulations of test results 

      Gómez Bonilla, Rodrigo Andrés; Romero Morales, Enrique Edgar; Lloret Morancho, Antonio; Suriol Castellví, Josep (Taylor & Francis, 2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The paper reports an experimental study and parameter calibration exercise centred on the hydro-mechanical response of an unsaturated soil. The study benefits from compacted silt samples retrieved from a fully instrumented ...

    • Simulation of penetration problems in geomechanics 

      Gens Solé, Antonio; Arroyo Alvarez de Toledo, Marcos; Carbonell Puigbó, Josep Maria; Ciantia, Matteo Oryem; Monforte Vila, Lluís (2017)
      Text en actes de congrés
      Accés obert
      The simulation of penetration problems in geomaterials is a challenging problem as it involves large deformations and displacements as well as strong non-linearities affecting material behaviour, geometry and contact ...