Now showing items 3-16 of 16

  • Cyclic constitutive model for concrete 

    Sima Brum, José Fernando; Roca Fabregat, Pedro; Molins i Borrell, Climent (Elsevier, 2008)
    Article
    Open Access
    A constitutive model for concrete subjected to cyclic loadings in both compression and tension is presented. The proposed model is intended to provide improvements on modelling the cyclic behaviour of concrete structures ...
  • Damage plastic model for concrete failure under impulsive loadings 

    Guilbaud, Daniel (CIMNE, 2015)
    Conference lecture
    Open Access
    The IRIS 2012 benchmark [1] was devoted to compare various modelling of impact on reinforced concrete slabs. Its aim was to improve the methods used and to provide guidance to assess the integrity of structures impacted ...
  • Finite element analysis of compressive failure in stiffened carbon fiber panels 

    Torrent Collell, Jordi (Universitat Politècnica de Catalunya, 2011-09-29)
    Master thesis
    Restricted access - author's decision
    The use of composite materials in the aerospace industry is experiencing a large increase in recent years. Mainly they are used to build commercial aircraft fuselages. COCOMAT project had aimed to study and to improve ...
  • Microplane model M7 for plain concrete. I: Formulation 

    Caner, Ferhun Cem; Bazant, Zdenek Pavel (American Society of Civil Engineers (ASCE), 2013-12-01)
    Article
    Restricted access - publisher's policy
    Mathematical modeling of the nonlinear triaxial behavior and damage of such a complexmaterial as concrete has been a long-standing challenge in which progress has been made only in gradual increments. The goal of this ...
  • Model-wise algorithm for the resolution of fatigue problems 

    Barbu, Lucia Gratiela; Oller Martínez, Sergio Horacio; Martínez García, Javier; Barbat Barbat, Horia Alejandro (CIMNE, 2015)
    Conference report
    Open Access
    The present work presents a general constitutive model formulation and a numerical algorithm for automatically selecting the appropriate coupling of damage and plasticity as a function of the number of cycles the material ...
  • Modeling of the behavior in high-cycle fatigue based on the coupling plasticity-damage in a mesoscopic scale 

    Messellek, A. C.; Belouchrani, M. E. A. (CIMNE, 2015)
    Conference lecture
    Open Access
    The methods of prediction of lifespan in high cycle fatigue are under development since decades and are used by engineers to dimension the structures. The purpose of the work presented in this paper is to establish a ...
  • Numerical modelling of masonry shear walls failure mechanisms 

    Drougkas, Anastasios; Pelà, Luca; Roca Fabregat, Pedro (2014)
    Conference report
    Restricted access - publisher's policy
    This paper presents an investigation on the ability of two alternative FE-based numerical methods to simulate the in-plane strength and collapse of brick masonry shear walls. The methods considered consist of a meso-model, ...
  • On the equivalence between traction- and stress-based approaches for the modeling of localized failure in solids 

    Wu, Jian-Ying; Cervera Ruiz, Miguel (2015-09)
    Article
    Restricted access - publisher's policy
    This work investigates systematically traction- and stress-based approaches for the modeling of strong and regularized discontinuities induced by localized failure in solids. Two complementary methodologies, i.e., ...
  • Phase transformation and subsurface damage in 3Y-TZP after sandblasting 

    Chintapalli, R.K.; García Marro, Fernando; Jiménez Piqué, Emilio; Anglada Gomila, Marcos Juan (2013-05)
    Article
    Restricted access - publisher's policy
    Objective The goal of this work is to investigate t–m phase transformation, and subsurface damage in 3Y-TZP after sandblasting. Methods Commercial grade 3Y-TZP powder was conventionally sintered and fully dense ...
  • Plastic damage model for nonlinear reinforced concrete frames analysis 

    Faleiro de Freitas, Jeovan; Barbat Barbat, Horia Alejandro; Oller Martínez, Sergio Horacio (2005)
    Conference report
    Open Access
    This paper describes an improved analytical model for predicting the nonlinear response of multistory reinforced concrete frames, based on the concepts of isotropic continuum damage mechanics combined with plasticity theory. ...
  • Probabilistic assessment of seismic risk in urban areas 

    Aguilar, Armando; Pujades Beneit, Lluís; Barbat Barbat, Horia Alejandro; Ordaz Schroder, Mario Gustavo (2008-01-31)
    Conference report
    Restricted access - publisher's policy
    A probabilistic approach to estimate the expected seismic physical damage of existing buildings in urban areas is presented. The main steps of the procedure are seismic hazard, vulnerability and structural response. These ...
  • Simulation of damage growth in pre-notched cylindrical test specimens using continuum damage mechanics model 

    Kumar, Manoj; Dixit, P. M. (CIMNE, 2015)
    Conference lecture
    Open Access
    Ductile fracture occurs due to micro-void nucleation, growth and, finally coalescence into micro-cracks. These micro-cracks grow as the deformation progresses. Nowadays, continuum damage mechanics model is employed as one ...
  • The influence of combined sheet metal forming on the increasing formability by experimental and numerical investigations 

    Kiliclar, Yalin; Koraydemir, O.; Vladimirov, Ivaylo N.; Weddeling, Christian; Reese, Stefanie; Tekkaya, A.Erman (CIMNE, 2015)
    Conference lecture
    Open Access
  • The influence of the graphite mechanical properties on the constitutive response of a ferritic ductile cast iron – a micromechanical FE analysis 

    Andriollo, Tito; Thorborg, Jesper; Hattel, Jesper (CIMNE, 2015)
    Conference lecture
    Open Access
    In the present paper a micro-mechanical approach is used to investigate the influence of the graphite mechanical properties on the loading response in the early deformation range of ductile cast iron. A periodic unit cell ...