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电动商用车车架疲劳寿命模拟与优化

王源绍 严斯 张继元 迟英姿 乔克婷

王源绍,严斯,张继元, 等. 电动商用车车架疲劳寿命模拟与优化[J]. 机械科学与技术,2023,42(5):673-678 doi: 10.13433/j.cnki.1003-8728.20220031
引用本文: 王源绍,严斯,张继元, 等. 电动商用车车架疲劳寿命模拟与优化[J]. 机械科学与技术,2023,42(5):673-678 doi: 10.13433/j.cnki.1003-8728.20220031
WANG Yuanshao, YAN Si, ZHANG Jiyuan, CHI Yingzi, QIAO Keting. Simulation and Optimization of Fatigue Life for Electric Commercial Vehicle Frame[J]. Mechanical Science and Technology for Aerospace Engineering, 2023, 42(5): 673-678. doi: 10.13433/j.cnki.1003-8728.20220031
Citation: WANG Yuanshao, YAN Si, ZHANG Jiyuan, CHI Yingzi, QIAO Keting. Simulation and Optimization of Fatigue Life for Electric Commercial Vehicle Frame[J]. Mechanical Science and Technology for Aerospace Engineering, 2023, 42(5): 673-678. doi: 10.13433/j.cnki.1003-8728.20220031

电动商用车车架疲劳寿命模拟与优化

doi: 10.13433/j.cnki.1003-8728.20220031
基金项目: 江苏省高等学校自然科学研究面上项目(19KJD580004)
详细信息
    作者简介:

    王源绍(1987−),讲师,博士研究生,研究方向为汽车NVH、车身轻量化,wangshuibai@126.com

  • 中图分类号: TH-3

Simulation and Optimization of Fatigue Life for Electric Commercial Vehicle Frame

  • 摘要: 为精确预测电动商用车车架疲劳寿命,通过建立车架有限元模型并进行强度仿真,确定疲劳失效危险位置。采集危险位置载荷谱,分析疲劳损伤值,采用Miner疲劳损伤理论和雨流计数法将应力谱时域信号转化成雨流矩阵,最终建立车架台架实验与道路试验疲劳寿命间的当量折算关系。设计实验方法并制作实验台架,对比道路试验与台架实验结果,验证了所建立当量折算关系的准确性。表明所建立的实验方法可提高车架疲劳寿命预测精度与可靠性,缩短道路疲劳试验周期。
  • 图  1  车架有限元模型

    图  2  仿真结果

    图  3  雨流计数法

    图  4  车架前测量点加速度谱案

    图  5  车架后测量点加速度谱案

    图  6  车架扭转角-时间曲线

    图  7  车架应变信号采集点

    图  8  采集点应力谱

    图  9  台架疲劳实验

    图  10  车架纵梁台架实验结果

    图  11  车架纵梁道路试验结果

    表  1  车架左侧纵梁损伤结果

    编号实验工况单次损伤
    1−1°~1°1.17×10−6
    2−2°~2°1.89×10−6
    3−3°~3°3.86×10−6
    4−4°~4°9.77×10−6
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-05-25
  • 网络出版日期:  2023-05-29
  • 刊出日期:  2023-05-25

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