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1.河北工业大学 天津市新能源汽车动力传动与安全技术重点实验室,天津 300401
2.广西大学 机械工程学院,南宁 530004
3.浙江义利汽车零部件有限公司,义乌 322000
4.株洲齿轮有限责任公司,株洲 412000
赵鹏博,男,1996年生,河北保定人,硕士研究生;主要研究方向为齿轮弯曲疲劳;E-mail:zpb02021@163.com。
陈勇 (通信作者),男,1954年生,北京人,教授,博士研究生导师;主要研究方向为汽车系统动力学、高强度齿轮磨损摩擦学Email:chenyong1585811@163.com
收稿日期:2023-07-04,
修回日期:2023-08-07,
纸质出版日期:2025-02-15
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赵鹏博,陈勇,尤晖,等. 考虑残余应力和硬度影响的齿轮弯曲疲劳寿命预估[J]. 机械强度,2025,47(2):53-60.
ZHAO Pengbo,CHEN Yong,YOU Hui,et al. Forecast of bending fatigue life for gears considering the influence of residual stress and hardness[J]. Journal of Mechanical Strength,2025,47(2):53-60.
赵鹏博,陈勇,尤晖,等. 考虑残余应力和硬度影响的齿轮弯曲疲劳寿命预估[J]. 机械强度,2025,47(2):53-60. DOI: 10.16579/j.issn.1001.9669.2025.02.007.
ZHAO Pengbo,CHEN Yong,YOU Hui,et al. Forecast of bending fatigue life for gears considering the influence of residual stress and hardness[J]. Journal of Mechanical Strength,2025,47(2):53-60. DOI: 10.16579/j.issn.1001.9669.2025.02.007.
为研究残余应力和硬度对齿轮弯曲疲劳性能的影响,以渗碳热处理20MnCrS5钢制齿轮为研究对象,进行复合小径喷丸强化处理,进而实现同一材料的齿轮具有不同硬度和残余应力状态。以最大主应变准则为基础,分别引入残余应力影响项以及残余应力-硬度耦合影响项建立疲劳寿命预测模型。通过喷丸齿轮弯曲疲劳试验确定最优残余应力影响系数和修正系数,对比两种模型的寿命预测精度;通过未喷丸齿轮弯曲疲劳试验验证模型的准确性。结果表明,当单一考虑残余应力影响时,残余应力影响系数最优值为0.09,模型可实现较高的寿命预测精度。同时考虑残余应力和硬度影响,修正系数最优值为0.04,模型具有更高的预测精度。
In order to study the influence of residual stress and hardness on bending fatigue performance of gear
the 20MnCrS5 steel gear with carburizing heat treatment was taken as the research object
and composite small diameter shot peening strengthening treatment was carried out to realize the gear with different hardness and residual stress states of the same material.Based on the maximum principal strain criterion
incorporating separate factors for residual stress influence and residual stress-hardness coupling influence were introduced respectively to establish the fatigue life prediction model.Through shot-peened gear bending fatigue tests
optimal values for both the residual stress influence coefficient and correction coefficient were determined.The two models’ accuracy for life prediction was contrasted
and the accuracy of these models was further verified through unshot peened gear bending fatigue test.The results show that considering only residual stress influence yielded an optimal value of 0.09 for the residual stress influence coefficient
the model achieving high life predictive accuracy.Whereas considering the effects of residual stresses and hardness
it requires a correction coefficient with an optimal value of 0.04
the model achieve even higher predictive accuracy.
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