边界条件对机械结构有限元分析结果的影响  

Impact of boundary conditions on the result of FEM analysis of mechanical structures

作　　者：徐格宁[1] 冯晓蕾[1] 陶元芳[1] 杨瑞刚[1] 

机构地区：[1]太原科技大学机械电子工程学院

出　　处：《起重运输机械》2010年第2期60-64,共5页Hoisting and Conveying Machinery

摘　　要：从理论上阐述边界约束条件的重要性,通过把门式起重机的支腿结构简化在2个平面内并施加不同边界条件,说明不同的边界条件会导致较大差别的分析结果,提出了如何在静力分析中正确加载边界条件,强调了为提高计算结果的正确性和精度,必须根据实际情况确定边界条件。This essay theoretically elaborates on the importance of boundary constraints, and then explains how differ- ent boundary conditions lead to a rather high level of difference between different analysis results by simplifying the leg structure of a gantry crane onto two planes and then applying different boundary conditions. Then, it goes on to put forward how to correctly apply boundary conditions in static analysis, and stresses that in order to enhance correctness and precision of calculation results, boundary conditions must be based on the actual situation to be determined.

关 键 词：机械结构 有限元分析 边界条件 位移约束 载荷 

分 类 号：TH213.5[机械工程—机械制造及自动化]