Study on Relation Between D-P and C-M Failure Criterion and Rock Fracture Toughness

摘要：

First describe the selecting rule of the C-M and D-P failure criterion and the rule and the relations of the D-P criterion parameter with the rock mass fracture toughness; then through overlapped stresses in the end region of crackle, the total stresses about end region of tensile and sheared crackle can be obtained. The results are introduced into D-P failure criterion and C-M failure criterion, the relation between criterion D-P failure criterion, and rock fracture toughness KIc,KIIc-can be derived. Compared with the results of experiments, which proved the validity of the derivation.Through overlapped stresses in the end region of crackle, the total stresses about end region of tensile and sheared crackle can be obtained. The results are introduced into D-P failure criterion and C-M failure, the relation between criterion D-P failure criterion, and rock fracture toughness K I c, KII c. can be derived. Compared with the results of experiments, which proved the validity of the derivation.

关键词： Tensile and sheared crackles Failure criterion Fracture

作者: Yan Zheng

作者单位: Tibet Technical College,Architecture Department Lhasa Tibet 850030, P.R.China

会议类型: 国际会议

会议名称: 2011 International Conference on Vibration,Structural Engineering and Measurement(2011年振动、结构工程与测量国际会议 ICVSEM 2011)

会议地点: 上海

会议语种:英文

页码: 1385-1390

在线出版日期: 2011-10-21（万方平台首次上网日期，不代表论文的发表时间）