摘要
针对双横臂扭杆弹簧悬架的特点,运用多体动力学理论建立了某汽车独立悬架的仿真模型.根据扭杆弹簧的结构形式,在ADAMS/Car中分别提取3种典型工况关键点处的载荷并将其转化为扭矩,作为静力学分析的载荷条件;在有限元软件ANSYS中对典型工况下的扭杆弹簧进行静力学分析,提出空心杆的结构形式;基于响应面法对扭杆弹簧采取全局单目标优化,得到3种最佳优化方案.对比优化后与优化前的结果可以看出:优化后扭杆弹簧的受力性能得到了显著的改善,承受的最大等效应力降低了24%,总变形量降低了31%,扭杆弹簧质量降低了11%.
According to the characteristics of double-wishbone suspension with torsion bar,establish a simulation model of a car independent suspension was established by multi-body dynamics theory. According to the formal structure of torsion bar spring,loads of key points at three typical load conditions in ADAMS /Car were drawn and turned into torsion as the loading condition for statics analysis; statics analysis of the torsion bar was taken in typical conditions with ANSYS. The structure of hollow rod was designed; Three best programs were gotten by taking single objective global optimization on torus torsion spring bar which based on the response surface method. Comparison of the results after optimization and original showed： the mechanical properties of torsion bar improved significantly after optimization,the maximum equivalent stress decreased by 24%,the total deformation decreased by 31%,and the quality of torsion bar decreased by 11%.
出处
《郑州轻工业学院学报（自然科学版）》
CAS
2015年第5期76-80,共5页
Journal of Zhengzhou University of Light Industry:Natural Science
关键词
扭杆弹簧
悬架
响应面法
优化设计
torsion-bar spring
suspension
response surface method
optimization design
