轮式装载机前车架的模态分析  

The Modal Analysis of Front Frame of Wheel Loader

作　　者：李延斌[1] 张潮[1] 姜彤[1] 刘春 

机构地区：[1]沈阳工业大学机械工程学院,辽宁沈阳110870 [2]厦门厦工机械股份有限公司,福建厦门361000

出　　处：《机械设计与制造》2013年第9期110-112,共3页Machinery Design & Manufacture

基　　金：国家科技支撑计划课题(2011BAF11B01);中国博士后科学基金资助项目(2011M500572);辽宁省自然科学基金资助项目(201202161)

摘　　要：为了降低车架在危险工况的变形,提高车架材料的效能和车架的动态刚度,以XG958轮式装载机前车架为研究对象,运用有限元软件ANSYS对前车架进行模态分析。基于有限元和静动态理论,运用ANSYS软件建立前车架有限元模型,并对前车架进行形状结构的改进。改进后前车架第一阶模态频率降低了14.937Hz,最大位移减少0.02mm;第二阶模态频率降低了2.308Hz,最大位移减少了0.222mm;第三阶模态频率降低了30.52Hz,最大位移减少了0.065mm。整体上提高了前车架的动刚度。To reduce the deformation in the frame of XG958 wheel loader on dangerous condition, it improves material efficiency of the frame and the dynamic stiffness of the frame. The front frame of XG958 wheel loader is taken as subject, and the modal analysis of front frame is developed with the finite element software ANSYS. A FEA model of the frame is developed with the software ANSYS based on FEM and static/dynamic theory and the shape structure of Fovmerframe is improved. After the improvement, the first modal frequency of the front frame reduces by 14.937Hz, and the maximum displacement reduces by 0.02mm; The second modal frequency of the front frame reduces by 2.308Hz, and the maximum displacement reduces by 0.222mm; The third modal frequency of the front frame reduces by 30.52Hz, and the maximum displacement reduces by 0.065mm. Overall it improves the dynamic stiffness of the front frame.

关 键 词：前车架 ANSYS 有限元 模态分析 模态振型 模态频率 形状结构改进 动刚度 

分 类 号：TH16[机械工程—机械制造及自动化]