岩土工程学报2016，Vol.38Issue(6)：1051-1056,6.DOI:10.11779/CJGE201606011
水工结构接触问题的多体有限元法
Multi-body finite element method for contact problems in hydraulic structure
摘要
Abstract
Multi-body finite element method (MFEM) is proposed for analysis of local contact problems in hydraulic structure. Based on the block theory of discontinuous deformation analysis (DDA) method, each block can move and deform independently, and blocks contact with each other on their boundary. Each single block is analyzed using the finite element method (FEM) in the corresponding local coordinate system, and all contacting blocks need to satisfy the displacement compatibility requirements between two blocks. In this way, MFEM assures the continuity of the displacement and stress state between blocks. The calculated results of this method are in fairly good agreement with the actual situations. Normal and tangential stiffnesses are not required in algorithm, and thus the overlap problem is successfully avoided. Moreover, the accuracy of the block internal deformation is effectively improved. The theoretical basis and finite element coordinate equations for the proposed method are obtained. Finally, the validity and accuracy of the proposed procedure are demonstrated through three numerical examples.关键词
多体有限元法/水工结构/接触问题/接触判断Key words
multi-body finite element method/hydraulic structure/contact problem/contact judgment分类
建筑与水利引用本文复制引用
苏超,赵业彬..水工结构接触问题的多体有限元法[J].岩土工程学报,2016,38(6):1051-1056,6.基金项目
国家自然科学基金项目（51279053）；中央高校基本科研业务费专项资金项目 （）
