Now showing items 1-20 of 79

    • 3D analysis of H-M coupled problem with zero-thickness interface elements applied to geomechanics 

      Garolera Vinent, Daniel; Segura Serra, Josep Maria; Carol, Ignacio; Lakashmikhanta, Ramasesha; Alvarellos, J. (CIMNE, 2015)
      Conference lecture
      Open Access
      In spite of the significant developments seen in recent years,numerical modelin of Hydraulic Fracturing still poses major challenges due to the strong coupling between fluid flow and crack development,which is itself a ...
    • 3d numerical model of a confined fracture tests in concrete 

      Montenegro, O.; Sfer, D.; López Garello, Carlos María; Carol, Ignacio (CIMNE, 2013)
      Conference report
      Open Access
      The paper deals with the numerical simulation of a confined fracture test in concrete. The test is part of the experimental work carried out at ETSECCPB-UPC in order to elucidate the existence of a second mode of fracture ...
    • 3D numerical model of a confined fracture tests in concrete 

      Montenegro, Oscar Ivan; Sfer, Domingo; López Garello, Carlos María; Carol, Ignacio (2013)
      Conference report
      Open Access
      The paper deals with the numerical simulation of a confined fracture test in concrete. The test is part of the experimental work carried out at ETSECCPB-UPC in order to elucidate the existence of a second mode of fracture ...
    • 3D-Mesomechanical analysis of cracking and spalling of concrete subject to high temperatures 

      Pérez Carreras, Adrià; Rodríguez, Mariana; López Garello, Carlos María; Carol, Ignacio (CIMNE, 2013)
      Conference report
      Open Access
      In this paper, an existing meso-structural model for concrete which had been applied to the study of the mechanical effects of high temperatures in 2D, is extended to 3D, and to more complex coupled thermo-mechanical ...
    • 3D-Mesomechanical analysis of external sulfate attack in concrete 

      Pérez, A.; Riera Bayo, Celia; López Garello, Carlos María; Carol, Ignacio (CIMNE, 2017)
      Conference report
      Open Access
      The present study focuses on degradation of concrete by external sulfate attack. The numerical model developed by the MECMAT/UPC group, incorporates coupled C-M analysis using a meso-mechanical approach with discrete ...
    • 3D-mesomechanical analysis of external sulfate attack in concrete 

      Pérez Carreras, Adrià; Riera Bayo, Celia; López Garello, Carlos María; Carol, Ignacio (2017)
      Conference report
      Open Access
      The present study focuses on degradation of concrete by external sulfate attack. The numerical model developed by the MECMAT/UPC group, incorporates coupled C-M analysis using a meso-mechanical approach with discrete ...
    • A zero-thickness mortar / Interface formulation with application to fracture mechanics 

      Francisco Sans, Miguel de; Carol, Ignacio (2019)
      Conference report
      Open Access
      A zero-thickness mortar/interface element formulation is briefly described and demonstrated. This element may be considered as an extension of traditional zero-thickness interface element, in order to represent material ...
    • A zero-thickness mortar/ interface formulation with application to fracture mechanics 

      Francisco Sans, Miguel de; Carol, Ignacio (CIMNE, 2019)
      Conference report
      Open Access
      A zero-thickness mortar/interface element formulation is briefly described and demonstrated. This element may be considered as an extension of traditional zero-thickness interface element, in order to represent material ...
    • Análisis 2D y 3D de la fractura del hormigón por ataque sulfático externo 

      López Garello, Carlos María; Vélez, A.; Carol, Ignacio; Pérez Carreras, Adrià; Idiart, Andrés (Grupo Español de Fractura, 2019)
      Conference report
      Restricted access - publisher's policy
      El hormigón puede degradarse debido a diferentes formas de ataques químicos. Este artículo se centra en uno de ellos, el ataque sulfático externo. Un modelo de difusión-reacción se ha combinado en un contexto acoplado a ...
    • Análisis del hormigón en modo mixto de fractura utilizando un modelo meso-estructural con elementos junta. 

      López Garello, Carlos María; Carol, Ignacio; Carol, Ignacio (2010)
      Conference report
      Restricted access - publisher's policy
      En este trabajo se presentan resultados de la simulación numérica de algunos ensayos experimentales sobre muestras de hormigón sometidas a carga biaxial que combina tracción y corte [1]. Para ello se emplea una modelización ...
    • Análisis mecomecánico de la fisuración del hormigón sometido a la acción de altas temperaturas 

      Rodríguez, Mariana; Pérez, Adrià; López Garello, Carlos María; Carol, Ignacio (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
      Conference report
      Restricted access - publisher's policy
      Un modelo meso estructural 2D empleado inicialmente en el análisis mecánico del hormigón bajo altas temperaturas, es extendido en este trabajo a un análisis 3D y a un análisis termo-mecánico acoplado más complejo. El ...
    • Análisis mesomecánico del hormigón bajo cargas que generan cambios de dirección de fisuración 

      Puiggrós Parayre, Luis Javier; López Garello, Carlos María; Rodríguez, Mariana; Carol, Ignacio (2015)
      Conference report
      Restricted access - publisher's policy
      Para contrastar y comparar el comportamiento de modelos constitutivos del hormigón que tienen en cuenta la anisotropía inducida por fisuración y daño, con frecuencia se ha empleado un test teórico en el cual se impone un ...
    • Application of configurational mechanics to crack propagation 

      Crusat Codina, Laura; Carol, Ignacio (CIMNE, 2017)
      Conference report
      Open Access
      Crack initiation and propagation is an essential aspect in the mechanical behavior of a large variety of materials and structures in all fields of Engineering and, in particular, the prediction of crack trajectories is one ...
    • Application of configurational mechanics to crack propagation 

      Crusat Codina, Laura; Carol, Ignacio (International Centre for Numerical Methods in Engineering (CIMNE), 2017)
      Conference report
      Open Access
      Crack initiation and propagation is an essential aspect in the mechanical behavior of a large variety of materials and structures in all fields of Engineering and, in particular, the prediction of crack trajectories is one ...
    • Application of zero-thickness interface elements to sanding prediction analysis 

      Garolera Vinent, Daniel; Carol, Ignacio; Papanastasiou, Panos (2020-07)
      Article
      Restricted access - publisher's policy
      A computational micromechanical analysis based on zero thickness interface elements for modelling solid prediction in hydrocarbon reservoir sandstones is presented. The model is capable of modelling localization of ...
    • ASR expansions at the level of a single glass-cement paste interface: experimental results and proposal of a reaction-expansion mechanism 

      Liaudat, Joaquín; Carol, Ignacio; López Garello, Carlos María; Leemann, Andreas (Elsevier, 2019-09)
      Article
      Restricted access - publisher's policy
      A new experimental methodology for studying ASR expansions at the level of a single aggregate-cementitious matrix interface is proposed. For this methodology, small sandwich-like specimens, with cement paste or mortar on ...
    • ASR expansions in concrete under triaxial confinement 

      Liaudat, Joaquín; Carol, Ignacio; López Garello, Carlos María; Saouma, Victor E. (2018-02)
      Article
      Open Access
      It is well known that the Alkali-Silica Reaction (ASR) expansion in concrete is influenced by the stress state of the material. However, the extent and nature of this influence is not completely understood due to the ...
    • Avoiding fracture instability in wedge splitting tests by means of numerical simulations 

      Liaudat, Joaquín; Garolera, D.; Martínez, A.; Carol, Ignacio; Lakshmikantha, M.R.; Alvarellos, J. (CIMNE, 2017)
      Conference report
      Open Access
      In this paper, unstable fracture propagation obtained in a in-house performed experimental Wedge Splitting Test (WST) is simulated by means of the FEM and fracturebased zero-thickness interface elements. In order to obtain ...
    • Avoiding fracture instability in wedge splitting tests by means of numerical simulations 

      Liaudat, Joaquín; Garolera Vinent, Daniel; Martínez Estévez, Ariadna; Carol, Ignacio; Lakshmikantha, Ramasesha Mookanahallipatna; Alvarellos Iglesias, José (2017)
      Conference report
      Open Access
      In this paper, unstable fracture propagation obtained in a in-house performed experimentalWedge Splitting Test (WST) is simulated by means of the FEM and fracture- based zero-thickness interface elements. In order to obtain ...
    • Comparison of discrete and equivalent continuum approaches to simulate the mechanical behavior of jointed rock masses 

      Gonzalez, Nubia Aurora; Vargas, P.E.; Carol, Ignacio; Das, K. C.; Sandha, S.S.; Rodrigues, E.; Mello,, U.; Segura Segarra, José María; Lakshmikantha, Ramasesha Mookanahallipatna (CRC Press, 2016)
      Conference report
      Restricted access - publisher's policy
      Modeling of rock masses is of major importance to assess the Geomechanical behaviour of oil &gas reservoirs, especially for fractured tight reservoirs. The presence of discontinuities will significantly influence the general ...