初始平衡状态的接触网有限元模型  

Finite Element Model for Catenary in Initial Equilibrium State

作　　者：李瑞平[1] 周宁[1] 梅桂明[1] 张卫华[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《西南交通大学学报》2009年第5期732-737,共6页Journal of Southwest Jiaotong University

基　　金：国家自然科学杰出青年基金资助项目(50525518);创新研究群体科学基金资助项目(50821063);国家973计划项目(2007CB714700)

摘　　要：为准确和快速地计算接触网初始平衡状态的吊弦长度、静态刚度、固有频率和模态振型,分别用索单元和梁单元建立了接触网有限元模型.结果表明:单元类型的选择对接触网静态和动态的结果影响可忽略不计;索单元的自由度数目少,可提高计算效率;计算静态刚度和模态振型时,需先确定接触网平衡位置且考虑单元轴向刚度.Finite element models were established using link and beam elements, respectively, to accurately and quickly calculate the dropper lengths, static stiffness, natural frequencies and mode shapes of catenaries in the initial equilibrium state. The results show that the two element types exert no obvious effect on the static and dynamic simulation results; the calculation efficiency can be improved using the link elements due to their fewer freedom degrees; the equilibrium positions and the axial stiffness of the elements should be determined in advance when the static stiffness and mode shapes are calculated.

关 键 词：接触网 有限元 初始平衡 索单元 梁单元 

分 类 号：TM922.5[电气工程—电力电子与电力传动] O242.2[理学—计算数学]