机械科学与技术2011，Vol.30Issue(10)：1724-1727,4.
基于灵敏度分析的汽车车架轻量化研究
A Study on the Lightweighting of Vehicle Frame Based on Sensitivity Analysis
摘要
Abstract
The finite element model for an off-road vehicle frame is established, its stiffness and lower order modal frequencies are obtained by finite element method. The result provides reference for the frame lightweighting design. The rationality of the model is verified by the comparison of the modal frequencies obtained by numerical simulation test respectively. Based on sensitivity analysis, the optimization on the thickness of frame parts is conducted using an objective of minimizing the mass of frame with the constraints of meeting the requirements of bending stiffness, torsion stiffness and lower order modal frequencies. The results show that the total mass of the frame is reduced by 8.62%, at the same time the first order modal frequency is increased by 1.02 Hz, the bending stiffness and torsion stiffness are increased by 5.52% and O. 79% respectively.关键词
车架/有限元法/灵敏度分析/轻量化Key words
frame/finite element method/sensitivity analysis/lightweighting分类
交通工程引用本文复制引用
刘林华,辛勇..基于灵敏度分析的汽车车架轻量化研究[J].机械科学与技术,2011,30(10):1724-1727,4.基金项目
国家自然科学基金项目（50645032）和江西省科技攻关计划项目（2006-C0202400）资助 （）
