基于ANSYS的桥式起重机主梁有限元分析及结构改进  

Finite element analysis and structural development of the bridge crane girder based on ANSYS

作　　者：黄荣星[1] 王虎奇[1] 罗锡荣[1] 

机构地区：[1]广西工学院机械工程系,广西柳州545006

出　　处：《机械研究与应用》2012年第6期52-54,共3页Mechanical Research & Application

基　　金：广西教育厅基金资助项目(201203YB128);广西工学院博士基金(院科博11Z11);广西工学院自然科学基金(院科自1166206)

摘　　要：以某机械厂生产的20T/5T桥式起重机为研究对象,对桥式起重机主梁的结构特点和承载特点进行全面分析,找出在作业过程中遇到的最危险工况。借助大型有限元分析软件ANSYS建立主梁、走台、轨道的模型,并计算出在该工况下主梁的位移变化和应力分布。分析结果表明,主梁端部下盖处存在严重的应力集中,并就此提出了主梁结构的改进方案,校核改进后主梁的强度,比改进前提高了28%,且改善了应力集中现象。同时为以后主梁的整体优化设计提供了良好的应力储备。20T/5T-21.55m bridge crane is taken as the object of research,girder′s structure and loading characteristics of bridge crane is analyzed comprehensively,then the most dangerous condition is found out.The model of the girder,walking board and track is built and the displacement and stress distribution of girder in this condition is calculated based on finite element software ANSYS.The result show that severe stress concentration occurs at the end of girder,then the improved solution is put forward,The intensity of the new girder is checked,which is improved by 28% than before,and the stress concentration is reduced.The results provide stress reserve for future optimal design.

关 键 词：桥式起重机主梁 有限元分析 ANSYS 结构改进 

分 类 号：TH21[机械工程—机械制造及自动化]