扭转梁后桥疲劳试验规范研究  

RESEARCH ON FATIGUE TEST SPECIFICATION FOR TORSION BEAM REAR AXLE

作　　者：郑松林[1,2] 邓鑫[1] 冯金芝[1,2] 王洪海[1] 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]机械工业汽车底盘机械零部件强度与可靠性评价重点实验室,上海200093

出　　处：《机械强度》2015年第5期952-958,共7页Journal of Mechanical Strength

基　　金：国家"十二五"863重大项目(2012AA110701);国家自然科学基金(51375313);上海市科委基础研究重点项目(13JC1408500;11140502000);上海汽车工业科技发展基金(1104);上海市教委重点学科建设项目(J50503)资助~~

摘　　要：以扭转梁后桥为对象,运用Adams软件对整车参数进行分析,得出后轴轴荷是影响后轮轮心垂向力幅主要因素,然后运用Hype Works软件分析后轮轮心垂向力幅与轮心位移幅的关系,最终得出结论:后轴轴荷是后轮轮心位移幅的最主要因素。继而通过对现有多种乘用车扭转梁后桥疲劳试验案例的研究分析,建立了后轴轴荷与扭转梁后桥疲劳试验加载位移之间的数学关系。由此,建立了通用的扭转梁后桥疲劳试验规范。最后通过将新规范与旧规范进行对比分析,验证了新规范的有效性。Based on the torsion beam rear axle, the parameters of entire vehicle are analyzed by ADAMS. The result show that the rear axle load is the most significant factor for vertical force amplitude at wheel center. The relationship between vertical force amplitude and displacement amplitude at wheel center are analyzed by Hyper Works. The result show that that the rear axle load is the most significant factor for displacement amplitude at wheel center. By summarizing the existed fatigue test examples for torsion beam rear axle, the relationship is established mathematically between rear axle load and the displacement of torsion beam rear axle. According to the above analysis, the general fatigue test specification for torsion beam rear axles is established. The effectiveness of the new test specification is verified by comparing with old test specification.

关 键 词：扭转梁后桥 耐久性试验 后轴轴荷 轮心垂向力 轮心位移 试验规范 

分 类 号：U467.3[机械工程—车辆工程]