Simulation of cohesive crack growth by a variable-node XFEM
作者机构：Nanjing Automation Institute of Water Conservancy and HydrologyNanjing 210012China Department of Engineering MechanicsHohai UniversityNanjing 211100China Laboratory of Solid StructuresUniversity of LuxembourgLuxembourg L-1359Luxembourg Institute for Research and DevelopmentDuy Tan UniversityDa Nang City 550000Vietnam Department of Civil and Environmental EngineeringTokyo Institute of TechnologyTokyo 152-8552Japan
出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)
年 卷 期：2020年第14卷第1期
页 面：215-228页
核心收录：
学科分类：08[工学] 081402[工学-结构工程] 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]
主 题：extended finite element method cohesive zone model sign function crack propagation
摘 要：A new computational approach that combines the extended finite element method associated with variable-node elements and cohesive zone model is *** using a new enriched technique based on sign function,the proposed model using 4-node quadrilateral elements can eliminate the blending element *** also allows modeling the equal stresses at both sides of the crack in the crack-tip as assumed in the cohesive model,and is able to simulate the arbitrary crack-tip *** multiscale mesh technique associated with variable-node elements and the arc-length method further improve the efficiency of the developed *** performance and accuracy of the present approach are illustrated through numerical experiments considering both mode-I and mixed-mode fracture in concrete.
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