水工结构弹粘塑性动力分析的三维p型有限元法  

Elasto-viscoplastic dynamic analysis by 3D p-version adaptive FEM for hydraulic structures

作　　者：费文平[1] 陈胜宏[1] 

机构地区：[1]武汉大学水利水电学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2003年第2期20-24,共5页Engineering Journal of Wuhan University

基　　金：国家自然科学基金 (5 99790 2 1);骨干教师基金资助项目

摘　　要：以Wilson_θ法的增量形式为基础 ,充分利用p型有限元前处理少、计算精度高和收敛速度快的优点 ,建立了水工结构弹粘塑性动力分析的三维p型有限元模型 ,给出了求解结构动力响应的自适应升阶策略 ,通过具体算例 。On the basis of incremental Wilson_ θ method, an elasto_viscoplastic dynamic analysis model for hydraulic structures is established by using 3D p_version adaptive FEM and making full use of the merits of the p_version method, which needs less preprocessing with high quality and rapid convergence. An adaptive strategy solving structural dynamic response is also presented. The feasibility and superiority of the 3D p_version FEM are tested by an example.

关 键 词：动力分析 升阶谱有限元 P型有限元 

分 类 号：TU457[建筑科学—岩土工程]