水利学报2012，Vol.43Issue(2)：168-174,7.
用改进扩展有限元法研究重力坝强震断裂过程
Seismic fracture processes analysis for gravity dams using Extended Finite Element Method
摘要
Abstract
An improved Extended Finite Element Method namely phantom node XFEM, is introduced to analyze the dynamic fracture process of multiple cracks in gravity dams subjected to strong earthquake. Experiments of dynamic fracture of mode I and mixed-mode Ⅰ- Ⅱ for concrete are used for accuracy verification. On this basis the seismic fracture of the Koyna Gravity Dam is analyzed using the proposed procedure. The results demonstrate that the improved dynamic XFEM has sufficient accuracy for analysis of concrete. It is also found that the simulation of progressive fracture process using this method can be carried out without using remeshing scheme, and it is not necessary to use subdomain integration to describe dis- continuities.关键词
扩展有限元法/动力/开裂/重力坝Key words
Extended Finite Element Method/dynamic/fracture/gravity dam分类
建筑与水利引用本文复制引用
潘坚文,张楚汉,徐艳杰..用改进扩展有限元法研究重力坝强震断裂过程[J].水利学报,2012,43(2):168-174,7.基金项目
国家自然科学基金资助项目 （）
