Fatigue life sensitivity research for electric driving system in driving load cases and random vibration load cases

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Proceedings of the Institution of Mechanical Engineers Part D-Journal of Automobile Engineering Pub Date : 2024-07-23 DOI:10.1177/09544070241260901

Peng Zhuokai, Chen Weiqiang, Liu Jing, Zhu Linpei, Wei Dan

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Abstract

In this paper, the fatigue characteristics of the electric drive system in driving load cases and random vibration load cases are analyzed numerically and experimentally. The fatigue life of the driving system under these two load cases is analyzed by using the time domain method and frequency domain method respectively. The results show that the damage of rotating parts (gear and bearing) mainly occurs in driving load cases, and the damage of gear and bearing in the driving load cases is 71.78% and 43.46% respectively. Fixed components (housing and suspension support) have certain damage in driving load cases and random vibration load cases, and the damage is greater in driving load cases. The damage of housing and suspension support in driving load cases is 10.6% and 0.167% respectively; the damage under random vibration load cases is 1.32 × 10−11 and 3.12 × 10−11 respectively. Based on the above conclusions, it is suggested that the driving load case tests for electric driving system are necessary, but it is not necessary to do random vibration tests only for electric driving system, or the number of random vibration tests can be reduced. This not only ensures the reliability of the components, but also helps to reduce the test cost.

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电动驱动系统在驱动载荷和随机振动载荷情况下的疲劳寿命敏感性研究

本文通过数值和实验分析了电力驱动系统在驱动载荷情况和随机振动载荷情况下的疲劳特性。分别采用时域法和频域法分析了驱动系统在这两种载荷情况下的疲劳寿命。结果表明，旋转部件（齿轮和轴承）的损坏主要发生在驱动载荷情况下，驱动载荷情况下齿轮和轴承的损坏率分别为 71.78% 和 43.46%。固定部件（轴承座和悬架支架）在行驶载荷情况和随机振动载荷情况下都有一定程度的损坏，且行驶载荷情况下损坏程度更大。在行驶载荷情况下，壳体和悬挂支架的损坏率分别为 10.6% 和 0.167%；在随机振动载荷情况下，损坏率分别为 1.32 × 10-11 和 3.12 × 10-11。根据上述结论，建议对电力驱动系统进行驱动载荷工况试验是必要的，但没有必要只对电力驱动系统进行随机振动试验，或者可以减少随机振动试验的次数。这不仅能确保部件的可靠性，还有助于降低试验成本。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Institution of Mechanical Engineers Part D-Journal of Automobile Engineering 工程技术-工程：机械

CiteScore

4.40

自引率

17.60%

发文量

263

审稿时长

3.5 months

期刊介绍： The Journal of Automobile Engineering is an established, high quality multi-disciplinary journal which publishes the very best peer-reviewed science and engineering in the field.