FATIGUE SIMULATION OF TWIST BEAM BASED ON MEASURED LOAD SPECTRUM

ZHAN Nan; ZHENG FuRong; GAO PengFei; HAN Li

doi:10.16579/j.issn.1001.9669.2015.05.032

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FATIGUE SIMULATION OF TWIST BEAM BASED ON MEASURED LOAD SPECTRUM

更新时间：2022-09-22

- FATIGUE SIMULATION OF TWIST BEAM BASED ON MEASURED LOAD SPECTRUM
- Journal of Mechanical Strength Vol. 37, Issue 5, Pages: 959-963(2015)
- 作者机构：
  
  1. 天津大学力学系
  2. 天津一汽夏利汽车股份有限公司产品开发中心
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2015.05.032
  CLC：
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ZHAN Nan, ZHENG FuRong, GAO PengFei, et al. FATIGUE SIMULATION OF TWIST BEAM BASED ON MEASURED LOAD SPECTRUM. [J]. 37(5):959-963(2015)
DOI：

ZHAN Nan, ZHENG FuRong, GAO PengFei, et al. FATIGUE SIMULATION OF TWIST BEAM BASED ON MEASURED LOAD SPECTRUM. [J]. 37(5):959-963(2015) DOI： 10.16579/j.issn.1001.9669.2015.05.032.

摘要

通过六分力轮测试系统实测了某型轿车在试车场运行的载荷谱数据,以此作为输入,并综合有限元分析、多体动力学分析和疲劳分析等多种CAE手段,对该轿车后扭梁在实测载荷谱作用下的疲劳损伤分布进行了分析,预测了开裂风险位置并与试验进行了对照。结果表明,基于实测载荷谱的后扭梁疲劳损伤预测与试验结果一致性良好。对于开裂风险位置给出了相应的优化方案及优化后的损伤分布情况,优化后的方案有效降低了原方案的开裂风险,解决了后扭梁的开裂问题。

Abstract

Base on six component test system,the load spectrum of a certain type of car were obtained in skid pad.As the input data,the fatigue of the twist beam was analyzed by the use of multiple computer aided engineering（ CAE） as finite element method,Multi-body dynamics and fatigue analysis.The risk of the cracking position was predicted and contrasted with the road test.The results show that the predicted damage position based on the measured load spectrum was in good consistence with the road test.For the cracking risk position,corresponding optimized scheme was presented,and the damage distribution after optimization was given.The optimized scheme effectively reduced the risk of cracking of the original scheme,and the cracking problem of the twist beam was solved.

关键词

后扭梁疲劳分析耐久性载荷谱

Keywords

Twist beamFatigue analysisDurabilityLoad spectrum

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