Interaction Analysis of Multiple Cracks Based on the Maximum Shear Stress Criterion

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Jianfeng, Xue^1 ; Yuelin, Sun^2 ; Zhenzhong, Shen^3

China Renewable Energy Engineering Institute, Beijing

100120, China^1

China Institute of Water Resources and Hydropower Research, Beijing

100038, China^2

Hohai University, Nanjing

210098, China^3

关键词: Cracks propagation;    Element-free method;    Formation mechanism;    Interaction analysis;    Maximum shear stress;    Multiple crack;    Penetration test;    Propagation process;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/4/042045/pdf
DOI  :  10.1088/1755-1315/295/4/042045

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to analyse the interaction of multiple cracks in the process of the cracks propagation and penetration, the overlap triple-cracks penetration test was simulated according to the maximum shear stress criterion. The stress intensity factors of the crack tips were calculated by means of element-free method (EFM). The results show that the maximum shear stress criterion can simulate the crack propagation process well. With comparison with the single crack model, the formation mechanism of the wing cracks and the shear cracks, and the interaction between the cracks and its influence on the multi-cracks propagation path were also explained.