Study and Application of Structure Failure Simulation of Fracture Tracing by Manifold Method

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Zhao, Yan^1 ; Li, Haifeng^1 ; Zhang, Guoxin^1

China Institute of Water Resources and Hydropower Research, Beijing

100038, China^1

关键词: Contact length;    Contact stiffness;    Contact Stress;    Engineering domains;    Least square methods;    Numerical manifold method;    Structure failure;    Study and applications;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/6/062014/pdf
DOI  :  10.1088/1755-1315/153/6/062014

来源: IOP

【 摘 要 】

By improving the simulation method of contact and contact forces, the function of tracing the propagation of Multi-cracks, the Numerical Manifold Method proposed by Genhua- Shi is developed which can simulate the discontinuity of block system, the tensile or shear failure, and the crack propagation. The least-square method to calculate SIF is presented in this paper for broken cracks. Also the calculation method of contact stiffness matrix is modified. For edge- to-edge contact, correct distribution of contact stress is guaranteed, namely the contact stiffness and contact length make direct proportion. The structure failure problems inducing by crack propagation in different engineering domains are simulated. It shows that the method put forward and the program developed in this paper can0effectively simulate the structure failure and can give scientivic suggestion for engineering supporting.