基于ANSYS的客车车身骨架有限元分析与优化  

Finite Element Analysis and Optimization of Bus Body Frame Using on ANSYS

作　　者：乌秀春[1] 郑文强[1,2] 赵雪双 

机构地区：[1]上海电机学院汽车学院,上海200245 [2]上海同捷科技股份有限公司,上海201206 [3]北京汽车研究总院有限公司,北京101300

出　　处：《上海电机学院学报》2015年第3期146-151,179,共7页Journal of Shanghai Dianji University

基　　金：上海电机学院学科基础建设项目资助(12XKJC02)

摘　　要：采用梁单元的方法建立车身骨架有限元模型,验证其正确性。对客车骨架进行静力学分析和模态分析,得到了该型客车的固有频率和振型,利用APDL参数化设计语言对车身骨架进行优化分析设计。结果显示,车身骨架总质量较优化前减轻了3.48%,优化后整体的应力分布更加均匀,车身动态性能有了一定程度的提高。A finite element model is established and verified for the body frame of a bus using the method of beam element.Static and modal characteristics of the structure of bus body frame are analyzed to find its inherent frequency and vibration type.An optimization analysis program for the body frame is developed using APDL.The results show that the frame mass is reduced by 3.48% after optimization.The overall stress distribution is more uniform,and vehicle dynamic performance is improved.

关 键 词：客车 车身骨架 有限元 模态分析 优化设计 

分 类 号：U469.1[机械工程—车辆工程]