拖臂扭转梁式悬架系统整体与单件强度对比分析研究
2018-07-28刘彦春
刘彦春
【摘 要】在现代汽车上,底盘中的拖臂扭转梁式悬架系统是重要的受力部件,由于正常行驶工作中,汽车悬架系统各组成部件在载荷作用下相对位置会发生改变,常用的仿真系统对单件分析载荷,没有考虑构件的柔性,对悬架系统进行强度分析时,这些原因导致仿真结果产生偏差。因此,本文以某轿车拖臂扭转梁式悬架系统为例,对拖臂扭转梁式悬架系统进行整体强度分析,对比整体与单件强度,分析结果的差异,对提高拖臂扭转梁式悬架系统设计具有一定的指导意义。
【关键词】拖臂扭转梁式悬架;整体结构;强度分析
中图分类号: U463.32 文献标识码: A 文章编号: 2095-2457(2018)12-0151-002
DOI:10.19694/j.cnki.issn2095-2457.2018.12.068
Strength Analysis of Integrated Trailing Arm Torsion Beam Suspension System
LIU Yan-chun
(Anhui Technical College of Mechanical and Electrical Engineering,
Department of Mechnical Engineering, Wuhu 241002)
【Abstract】The trailing arm torsion beam suspension is an important force components which is very complicated in the chaisis system. Generally, when the suspension system during strength analysis, the relative position of assembly of the various components will be change. Therefor the strength of a single piece of analysis, it is difficult to take these factors into account. The load which is used for the single piece is derived from the calculation results of Adams. Therefor,this paper takes a car trailing arm torsion beam suspension for example, the finite element analysis is used for the whole rear axle assembly. The difference between the analysis of rear axle assembly and a single piece was compared, it is important for the design and development of trailing arm torsion beam suspension.
【Key words】Trailing arm torsion beam suspesnsion; Integrated model
0 前言
在现代汽车上,拖臂扭转梁式悬架是一种比较新的后悬架结构,其结构是由焊在一根横梁上的两根纵向臂组成,每个纵向臂上安装一根车轮。由于拖臂扭转梁式悬架的后轴是一个总成,传递从车身到车轮之间的各种力和力矩,控制车轮前行运动规律,减弱由于路面不平整对车身的冲击,确保操纵汽车在行驶过程中的稳定性和平稳性,所以拖臂扭转梁式悬架的强度,直接影响到车辆行驶的安全寿命和可靠性[1]。长期以来,对拖臂扭转式悬架后轴总成的强度分析大多针对各总成零部件进行单件强度校核,但在正常行驶工作中,由于悬架系统后轴总成各零部件间相对位置发生改变,加上仿真悬架时并没有考虑悬架中各构件的柔性等,都导致单件计算方式和强度分析都存在偏差,影响最终计算结果和仿真结果的准确性[2-4]。……
