某型轿车后轴的强度分析  

Analysis of the Strength of the Rear Axle for a Car

作　　者：叶文龙[1] 尹辉俊[1] 

机构地区：[1]广西工学院机械工程系,广西柳州545006

出　　处：《机械设计与制造》2013年第4期242-244,共3页Machinery Design & Manufacture

基　　金：广西科学研究与技术开发计划项目(桂科攻0992002-6);2011年广西高等学校优秀人才资助计划项目(桂教人[2011]40号)

摘　　要：针对某型轿车后轴在可靠性试验时扭杆断裂的问题,通过有限元分析的方法对其结构强度进行仿真分析。参照后轴疲劳试验条件,在疲劳试验极限位置,以强迫位移加载方式,对其进行结构强度分析及疲劳分析,通过仿真计算结果与台架疲劳试验及可靠性试验破坏结果的对比,得出了后轴疲劳断裂的原因,并提出了相应的改进方法。将改进后的后轴重复上述结构强度和疲劳分析过程,得到相对可靠的分析结果,在接下来的路况可靠性试验中未出现疲劳破坏现象。此方法也为后轴的后续改进设计提供了理论依据。Aiming at solving the fracture problem of the torsion bar in the rear axle of a car during the reliability test,simulation and analysis of its structural strength was developed based on finite elements modeling.According to the environment of rear axle fatigue test,the analysis of strength and fatigue was conducted by means of forcing load displacement at the extremity positions of fatigue test.By comparing the result of simulation with that of bench fatigue test and reliability test,it revealed the causes of rear axle fatigue fracture and proposed an optimization method.The improved rear repeat the above structure strength and fatigue analysis process,get relatively reliable analysis results,and the fatigue failure does not appear in the next traffic reliability test.It benefits the following design of the rear axle.

关 键 词：后轴 有限元分析 疲劳断裂 

分 类 号：TH16[机械工程—机械制造及自动化] U463.1[机械工程—车辆工程]