摘要
为了研究原始岩石介质的不连续及破坏后形成的不连续面,以岩石拉破坏的理论为基础,利用有限元方法引入裂张单元的概念,给出了岩石拉张破裂的四个判据,给出了裂张单元的原理,通过简支梁、中心有孔洞的薄板及巴西盘的具体实例,得出用裂张单元可以实现岩石破裂过程的模拟;岩石破裂后裂纹周围应力状态分布发生改变,需要重新调整。
In order to research the discontinuation and the discontinuation surface after damage of the original rock mediator, based on the rock tension damage, using the finite element method, four criterion of the rock pulling and sketching damage and the principle of the cracking and sketching element are given. Through the concrete sample of the simple beam, the thin plank having a hole in the centre and the Brazilian pan, the cracking and sketching element can be used to implement the simulation of the rock crack process, changing the stress state distribution of the crack round after the rock cracking and requiring the re-adjustment.
出处
《辽宁工程技术大学学报（自然科学版）》
EI
CAS
北大核心
2007年第2期198-200,共3页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金重点资助项目(504334020)
辽宁省科学技术基金资助项目(20022155)
教育厅重大基础研究资助项目(202182055)
关键词
岩石
拉破坏
数值模拟
裂张单元
rock
tension damage
numerical simulation
cracking and sketching element
