噪声与振动控制2019，Vol.39Issue(5)：89-95,7.DOI:10.3969/j.issn.1006-1355.2019.05.017
后悬下控制臂多学科多目标轻量化设计
Multi-disciplinary and Multi-objective Lightweight Design of Rear Suspension Lower Control Arms
摘要
Abstract
The problem of lightweight of a rear suspension lower control arm is studied. Firstly, the modal performance of the rear suspension lower control arm was analyzed based on finite element method. The results show that its first modal frequency and second modal frequency were higher than tire excitation frequencies, which can meet modal performance requirements. Then, the modals of the lower control arm were tested by adopting multi-point excitation and multi-point response method. It was shown that the modal frequencies of the test results were basically the same as those of the simulation results. Secondly, the loads of the lower control arm connection points in the conditions of braking, bumping and turning were extracted based on rear suspension system dynamic model. The strength analysis showed that the stresses of the arm were lower than the yield strength of the material in three typical working conditions, which could meet the strength performance requirements. Thirdly, the structural parameters of the lower control arm were optimized by adopting multi-disciplinary and multi-objective platform. The analysis results show that its first two modal frequencies basically remain unchanged. The strength performance of the arm can meet the design requirements, and its total weight is reduced. So, the lightweight purpose is achieved. Finally, the reliability of the optimized scheme was verified by real vehicles test.关键词
振动与波/下控制臂/模态试验/动力学模型/强度/多学科多目标/轻量化Key words
vibratiom and wave/lower control arm/modal test/dynamic model/strength/multi-disciplinary and multi-objective/lightweight分类
交通工程引用本文复制引用
黎秋萍..后悬下控制臂多学科多目标轻量化设计[J].噪声与振动控制,2019,39(5):89-95,7.基金项目
江西省教育厅科学技术研究资助项目(GJJ170388) （GJJ170388）
