水工结构的三维p型弹粘塑性自适应有限单元法  

3-D p-version elasto-viscoplastic adaptive FEM model for hydraulic structures

作　　者：费文平[1] 陈胜宏[1] 

机构地区：[1]武汉大学水利水电工程科学重点实验室,湖北武汉430072

出　　处：《水利学报》2003年第3期86-92,共7页Journal of Hydraulic Engineering

基　　金：国家自然科学基金(59979021);教育部骨干教师基金资助项目

摘　　要：建立了三维p型弹粘塑性有限单元法的数学模型,提出了其求解水工结构问题的自适应策略,编制了相应的计算程序,给出了具体算例,计算结果表明三维p型弹粘塑性有限单元法,不仅计算精度高、收敛速度快,而且具有升阶过程的可承袭性和网格剖分的简易性等优点,较易实现自适应过程,适合于求解大型的水工结构非线性分析问题。The authors proposed a mathematic model of 3D pversion elastoviscoplastic finite element method (FEM) and put forward an adaptive strategy for solving hydraulic structure problems. The corresponding pversion adaptive FEM program was implemented and a gravity dam was calculated. The result shows that pversion adaptive FEM proposed is a feasible and reliable structure analyzing tool with high quality and rapid convergence. By this method, a precise finite element mesh is unnecessary and the previous results can be inherited. With the convenient adaptive process, this method is very suitable for nonlinear analysis of complex hydraulic structures.

关 键 词：水工结构 弹粘塑性 有限单元法 升阶谱有限元 P型有限元 数学模型 

分 类 号：TV311[水利工程—水工结构工程]