有限元法求解截面内力方法比较  

Study on FEM by Use of Internal Force Analysis in Section

作　　者：颜天佑[1] 李同春[1] 赵兰浩[1] 任灏[1] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室

出　　处：《水电能源科学》2008年第3期141-143,共3页Water Resources and Power

摘　　要：介绍了有限单元法求解截面内力的三种方法———梁单元和板壳单元法、应力合成法、有限元内力法。当截面的应力为线性和非线性分布、网格粗细程度不同时,通过算例分析,比较了用不同方法求解截面内力的精确程度。In this paper, based on the method of FEM, several means and ways for obtaining the internal force in a certain section are introduced. They are adopting the beam element and shell element mode, compositing the stress in the section and using the method of finite internal force. By examples being analyzed and compared, the exactitude degree of the internal force is analyzed in different methods when the stress in the section is linearly and nonlinearly distributed and the element mesh is in different size.

关 键 词：应力合成 有限元内力法 内力分析 

分 类 号：TV31[水利工程—水工结构工程] O241.83[理学—计算数学]