岩土工程学报2007，Vol.29Issue(4)：587-593,7.
岩石冲击破坏的数值流形方法模拟
Simulation of impact failure of rock by numerical manifold method
刘红岩 1秦四清 1李厚恩 1马平 1孙强1
作者信息
- 1. 中国科学院工程地质力学重点实验室,北京,100029
- 折叠
摘要
Abstract
Impact failure of rock is a kind of typical dynamic problem. In order to perfectly analyze the dynamic problem by use of numerical manifold method (NMM), the Newmark method of dynamic finite element method was adopted to improve the algorithm in original NMM on the basis of analyzing the solution idea of dynamics problem in NMM. There were three obvious advantages in the improved method over the original one: ①The solution of this method was convergent without any condition when suitable parameters were selected; ②The time step adopted in this method was much longer than that in the original one;③The damping effect in the dynamic problem was fully considered. In the end, a calculation example was used to illustrate the application of this method in simulation of the whole process of impact failure of rock, which overcame the shortcomings of FEM in simulating the block movement after rock failure.关键词
岩石/冲击破坏/数值流形方法/块体运动/动力学Key words
rock/impact failure/numerical manifold method (NMM)/block movement/dynamics分类
建筑与水利引用本文复制引用
刘红岩,秦四清,李厚恩,马平,孙强..岩石冲击破坏的数值流形方法模拟[J].岩土工程学报,2007,29(4):587-593,7.
