Simulation of mixed-mode fracture process of reinforced concrete beam based on extended finite element method

被引：0
作者：
Ru, Zhong-Liang [1 ]
Shen, Wei [1 ]
Zhao, Hong-Bo [1 ]
机构：
[1] College of Civil Engineering, Henan Polytechnic University, Jiaozuo
来源：
Gongcheng Lixue/Engineering Mechanics | 2013年 / 30卷 / 05期
关键词：
Cohesive crack; Mixed-mode fracture; Numerical simulation; Reinforced concrete beam; XFEM;
D O I：
10.6052/j.issn.1000-4750.2012.03.0205
中图分类号：
学科分类号：
摘要：
To study the crack propagation of a reinforced concrete beam, a three-dimensional model of a simply supported concrete beam with an embedded crack was established. Based on the extended finite element method (XFEM), a cohesive crack model was used to describe the mechanical behavior of the crack surfaces. The stain softening behavior of a fracture process zone of the crack tip was represented by a linear softening curve. The mixed-mode fracture process of a plain concrete beam and reinforced concrete beam were simulated. The influences of longitudinal reinforcement on the crack propagation, load-deflection curve and load-CMOD (Crack Mouth Opening Displacement) curve were analyzed. The numerical simulation results show a good agreement with the experiment results. The advantage of XFEM for the structural analysis of fracture failure was presented.
引用
收藏
页码：215 / 220
页数：5
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