【作者】 郑燕萍； 倪晓宇； 方明霞； 何海波；

【Author】 Zheng Yanping~1 Ni Xiaoyu~1 Fang Minxia~2 He Haibo~1 (1.Nanjing Forestry University,Nanjin Jiangsu,210037;2.Tongji University,Shanghai,200092)

【机构】 南京林业大学汽车与交通工程学院； 同济大学航空航天与力学学院；

【摘要】 结合概率疲劳分析理论和汽车振动理论,通过CAD/CAE的设计手段,建立了汽车驱动桥壳的有限元振动分析力学模型。基于路谱随机载荷的概率计算结果,对汽车驱动桥壳进行了疲劳强度校核和疲劳寿命预估,并进一步提出了汽车驱动桥壳基于CAE随机振动计算结果的概率疲劳寿命预估方法。结果表明:随机振动计算结果能直观地反映驱动桥壳在汽车行驶时的1σ应力分布情况,应力较大值分布在钢板弹簧座内、外侧上下表面较大的区域和驱动桥壳中部。更多还原

【Abstract】 The mechanical model of finite element vibration analysis about the automobile drive axle housing was built by using the CAD/CAE designing method and combining the probability fatigue strength analysis theory with the automobile vibration theory.The fatigue strength check and the fatigue life prediction about the automobile drive axle housing were investigated based on the probability calculation results of road spectrum random loading.Furthermore,the fatigue life prediction method of the drive axle housing was proposed based on the calculation result of the CAE random vibration.The result show that the distribution of 1σstress in the drive axle could be directly reflected the result of Random vibration when the vehicle was driving,the great stress distributed in the middle part of drive axle and the regions which were the larger upper and lower surface in the inner and the outer of the spring block of steel sheet.更多还原