基于随机载荷的汽车驱动桥壳概率疲劳计算

郑燕萍1,倪晓宇1,方明霞2,何海波1

南京林业大学学报(自然科学版) ›› 2009, Vol. 33 ›› Issue (05) : 105.

南京林业大学学报(自然科学版) ›› 2009, Vol. 33 ›› Issue (05) : 105. DOI: 10.3969/j.jssn.1000-2006.2009.05.023
研究论文

基于随机载荷的汽车驱动桥壳概率疲劳计算

  • 郑燕萍1,倪晓宇1,方明霞2,何海波1
作者信息 +

Probability fatigue strength calculation of auto drive axle housing based on the random loading

  • ZHENG Yanping1, NI Xiaoyu1, FANG Mingxia2, HE Haibo1
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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。

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 showed that the distribution of 1σ stress 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.

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导出引用
郑燕萍1,倪晓宇1,方明霞2,何海波1. 基于随机载荷的汽车驱动桥壳概率疲劳计算[J]. 南京林业大学学报(自然科学版). 2009, 33(05): 105 https://doi.org/10.3969/j.jssn.1000-2006.2009.05.023
ZHENG Yanping1, NI Xiaoyu1, FANG Mingxia2, HE Haibo1. Probability fatigue strength calculation of auto drive axle housing based on the random loading[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2009, 33(05): 105 https://doi.org/10.3969/j.jssn.1000-2006.2009.05.023
中图分类号: U463.218   

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基金

收稿日期:2009-02-16修回日期:2009-05-20基金项目:南京林业大学“十五”人才工程项目(163040014);上海市产业技术创新专项(07XI2014)作者简介:郑燕萍(1965—),副教授,硕士,研究方向为汽车现代设计方法及整车性能匹配。Email: zhengyp@njfu.com.cn。引文格式:郑燕萍,倪晓宇,方明霞,等. 基于随机载荷的汽车驱动桥壳概率疲劳计算[J]. 南京林业大学学报:自然科学版,2009,33(5):105-108.

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