移动式架车机托臂力学结构的有限元分析  

Finite element analysis of the mechanical structure of the supporting arm of a mobile crane

作　　者：徐桂安 孙宁 王冬梅[1] 陈田[1] XU Guian;SUN Ning;WANG Dongmei;CHEN Tian(School of Mechanical Engineering,Shanghai Dianji University,Shanghai 201306,China)

机构地区：[1]上海电机学院机械学院,上海201306

出　　处：《上海电机学院学报》2022年第3期137-141,共5页Journal of Shanghai Dianji University

基　　金：上海多向模锻工程技术研究中心资助项目(20DZ2253200);上海市科委三年行动计划资助项目(22010501000)。

摘　　要：为研究移动式架车机托臂结构的稳定性,基于托臂接触的有限元计算模型,分析工作时托臂结构的稳定情况。针对轨道车辆工作时架车机结构的受力情况,建立架车机托臂的力学模型,分析计算出托臂的结构系数与力学性能的关系,并利用有限元分析软件分析托臂的刚度和强度。基于加载接触有限元分析原理,给出仿真分析的关键技术,其分析结果更接近工程应用实际,由于摩擦因数与接触刚度系数对有限元分析结果的影响,分析了模型不同接触区域的接触应力和等效应力。研究表明:不同接触区域的等效应力存在相对误差,且接触区域内接触面相对滑动程度决定了接触分析的精度,该结果可为架车机结构的优化设计提供理论依据。In order to study the stability of the support arm structure of the mobile crane,the finite element calculation model based on the support arm contact is used to analyze the stability of the support arm structure during operation.The mechanical model of the support arm of the crane is established according to the stress of the crane structure when the rail vehicle is working.The relationship between the structural coefficient and the mechanical properties of the support arm is analyzed and calculated,and the finite element analysis software is used to analyze the stiffness and strength of the support arm.Based on the principle of finite element analysis of loading contact,the key technology of simulation analysis is given,and the analysis results are closer to the practical engineering application.Due to the influence of friction factor and contact stiffness coefficient on the results of finite element analysis,the contact stress and the equivalent stress in different contact areas of the model are analyzed.The research shows that there are relative errors in the equivalent stress of different contact areas,and the relative sliding degree of the contact surfaces in the contact area determines the accuracy of the contact analysis.The results can provide a theoretical basis for the optimization of the structure design of the crane.

关 键 词：架车机托臂 有限元分析 静应力分析 接触分析 

分 类 号：TH211[机械工程—机械制造及自动化]