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

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.