Phase-field modeling of fracture for quasi-brittle materials

作     者：Jacinto Ulloa Patricio Rodríguez Cristóbal Samaniego Esteban Samaniego 

作者机构：Department of Civil EngineeringKatholieke Universiteit LeuvenB-3001 LeuvenBelgium Departamento de Recursos Hídricos y Ciencias AmbientalesUniversidad de CuencaCuenca 010151Ecuador Universidad de CuencaCuenca 010151Ecuador Institut für KontinuumsmechanikLeibniz Universität HannoverHannover 30167Germany Inria Bordeaux-Sud-Ouest Research Center200 Avenue de la Vieille TourTalence 33405France Facultad de IngenieríaUniversidad de CuencaEcuador 

出 版 物：《Underground Space》 (地下空间（英文）)

年 卷 期：2019年第4卷第1期

页      面：10-21页

核心收录：

学科分类：08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：EU H2020-MSCA-RISE-2016 Horizon 2020 Framework Programme, H2020, (734370) CYTED Ciencia y Tecnología para el Desarrollo, CYTED 

主　　题：Quasi-brittle materials Fracture Variational formulation Phase fields Gradient damage 

摘      要：This paper addresses the modeling of fracture in quasi-brittle materials using a phase-field approach to the description of crack *** the computational mechanics community,several studies have treated the issue of modeling fracture using phase *** of these studies have used an approach that implies the lack of a damage *** herein explore an alternative model that includes a damage threshold and study how it compares with the most popular *** formulation is systematically explained within a rigorous variational ***,we present the corresponding three-dimensional finite element discretization that leads to a straightforward numerical *** simulations in two dimensions and three dimensions are then *** results show that while an elastic stage and a damage threshold are ensured by the present model,good agreement with the results reported in the literature can be obtained,where such features are generally absent.