摘要
采用传统节理元近似模拟岩石破坏过程需要同时增加单元和节点,过程非常复杂。为了更有效模拟岩石岩石破坏过程产生的节理,建议了一种只包含2个节点的广义节理元的模拟方法,通过推导给出了基本方程,提供了单元信息设置方式。采用该广义节理元近似模拟岩石破坏过程只需要增加单元,不需要增加节点。模拟实例表明:采用广义节理元法模拟效果在应力方面精度和传统节理元法的精度一样,该广义节理元法有效可行。
When the traditional joint element methods are used to simulate the failure process of rock, it is necessary to increase the elements and the nodes, and the data processing is extremely complex. In order to more efficiently simulate the interaction between nodes in the finite element in fractured rock, a new simulating method is proposed. A simple interface element including two nodes, called the generalized joint element here, is suggested. Its fundamental equations are deduced, and its element organization method is offered. Using the generalized joint elements to simulate the joint in rock, it is necessary to increase the elements compared to the finite element mesh, and not necessary to change or increase the nodes. Numerical experiments of simulation of a rock joint indicate that the generalized joint element method is effective, and the accuracy of stress with the generalized joint elements is equal to that with the traditional ones.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2014年第10期1934-1939,共6页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金项目(51074152)
关键词
岩石力学
有限元
广义节理元
rock mechanics
finite element
generalized joint element
