摘要
建立了某A级车白车身的有限元模型,对白车身的各质量块安装点分别进行动刚度分析,得到质量块安装点的源点加速度响应(IPI)曲线,并且判断出动刚度相对较小的频率段。通过对IPI曲线峰值产生原因进行分析,分别选择尺寸优化和拓扑优化的方法对质量块安装点的动刚度进行优化。结果表明,采用尺寸优化和拓扑优化的方法进行优化设计可提高质量块安装点的动刚度。
A FEM model of the BIW （ body -- in -- white） of a class vehicle was constructed. The curves of IPI of the mounting points and the ranges of frequencies in which the mounting points were in the situation of low dynamic stiffness were obtained by analyzing the dynamic stiffness of the mounting points with the method of IPI. The size optimization and topology optimization were introduced to improve the dynamic stiffness of the mounting points. The results demonstrate that the introduction to these optimization methods makes the dynamic stiffness improved.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2010年第6期721-724,共4页
China Mechanical Engineering
基金
国家自然科学基金资助项目(50705067)
上海市数字化汽车车身工程重点实验室开放基金资助项目(2008005)
关键词
质量块安装点
动刚度
源点加速度响应
尺寸优化
拓扑优化
mounting point
dynamic stiffness
input point inertance （IPI）
size optimization
topology optimization
