有限元分析的位移控制法及其应用

有限元分析的位移控制法及其应用 English Version

基金项目: 香港RGC -CA99 0 0 ;;EG0 1 ;;武汉市科委资助项目(991 0 0 2 0 2 4 )

1.Institute of Rock and Soil Mechanics the Chinese Academy of Science Wuhan 430071 China 2. Department of Civil Engineering the University of Hong Kong Hong Kong China

摘要: 对于非线性问题的有限元分析 ,位移控制法 (DCM)比常用的载荷控制法 (LCM)有着更广泛的应用和更强的适应能力。但因DCM在求解技术上的一些难度 ,限制了其在岩土力学中的应用。本文利用Sherman Morrison定理 ,使得DCM仅需很少的运算量 ,对经典的LCM程序做少量的修补 ,即可造就一个有良好数值特性的DCM程序
- 有限元 /
- 位移控制法(DCM) /
- 载荷控制法(LCM) /
- 极限分析 /
- 应变软化
Abstract: For the finite element analysis of nonlinear problems, the displacement controlled method (DCM) has a more extensive application scope and a more powerful ability than the load controlled method (LCM) in common use. However, due to difficulties of DCM in solving procedure, the application of DCM in geomechanics has been restricted.By means of Sherman Morrison theorem,the solving procedure of DCM needs only little computation but has very good numeric stability. Moreover, the program structure of DCM is as simple as that of LCM.
- finite element /
- displacement controlled method (DCM) /
- Load controlled method (LCM) /
- Limit analysis /
- strain softening