摘要
通过断裂力学中裂纹端部的应力叠加,得出拉剪裂纹的端部总应力,代入D-P屈服准则和M-C屈服准则,推导得出D-P准则与岩石抗拉断裂韧度和抗剪断裂韧度的关系.与试验数据对比,说明推导的合理性.
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_(ⅠC),K_(ⅡC) can be derived.Compared with the experiments results the validity of the derivation is proved.
出处
《华中科技大学学报（城市科学版）》
CAS
2006年第z2期30-32,共3页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金资助项目(50379023)
湖北省高校优秀中青年科技团队计划资助项目(鄂教科[2004]7号)
关键词
拉剪裂纹
屈服准则
断裂
tensile and sheared crackles
failure criterion
fracture
