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Computer Simulation on the Three Point Bending Test of Concrete Specimen

Zhu Wancheng, Wang Shuhong, Tang Chun'an (School of Resources and Civil Engineering,Northeastern University, Shenyang 110006,China)  
According to physical model of three point bending test, the complete processes from the initiation and propagation of microcracks to the macroscopic failure of concrete specimen and mortar specimen were simulated by using MFPA 2D (material failure process analysis) code. The load step curve and the stress distribution figures during the deformation and failure process of the concrete specimen were presented. Based on the analysis of simulated results, it is concluded that the tensile stress at the crack tip is the driving force for the crack propagation, and the heterogeneity of concrete has a great influence on the crack propagation path which leads the crack propagation path becoming curvilinear.
【Fund】: 国家杰出青年科学基金;中国科学院力学研究所非线性连续介质力学开放实验室基金
【CateGory Index】: TU528.01
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