摘要
应用通用大型结构分析软件MSAP.对半承载式轿车车身进行有限元动力分析.并借助于CRAS模态分析系统软件.进行试验模态分析.验证有限元分析结果.通过车身动态分析.提出车身结构在动力方面所存在的问题和相应的改进措施.为车身结构的态设计和优化设计提供依据.
In this paper,the large structure analysing program MSAP was used in finite element dynamic analysis for a semi-integral car body. With the help of system analysing program CRAS. the experimental mode analysis of car body was carried out, and the results of finite element dynamic analysis were verified. By the dynamic analysis of the body, several problems lying in the body structure in respect of dynamic characteristics were found, and the corresponding improvement measures were put forward. All these would provide the basis for the optimization design of car body.
关键词
车身结构
有限元
模态参数
动态特性
轿车
Body structure
Finite element
Experimental mode analysis
Mode parameter
Dynamic characteristics.
