| 加速寿命过程的湿式摩擦副滑摩温升特性 |
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| 引用本文： | 吴健鹏,马彪,李和言,王立勇,马成男,刘继凯,师路骐.加速寿命过程的湿式摩擦副滑摩温升特性[J].哈尔滨工业大学学报,2019,51(7):103-111. |
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| 作者姓名： | 吴健鹏 马彪 李和言 王立勇 马成男 刘继凯 师路骐 |
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| 作者单位： | 北京理工大学 机械与车辆学院,北京,100081;深圳技术大学,广东 深圳,518118;现代测控技术教育部重点实验室(北京信息科技大学),北京,100192 |
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| 基金项目： | 国家自然科学基金 (2,5). |
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| 摘 要： | 为更深层次地探究湿式摩擦副滑摩温度场变化规律和失效机理,引入平均温升速率、最大径向温差、径向温度不均匀系数和径向温度偏移系数4个评价指标,建立湿式摩擦副滑摩温升特性评价体系.基于摩擦元件的实际工况,设计加速寿命试验,根据摩擦因数变化规律和最大径向温差划分了滑摩特性的不同阶段.建立温升特性评价体系,研究磨合期、稳定期和失稳期的滑摩温升特性变化规律,分析滑摩稳定期转速差、净面压和单位面积润滑流量对温升特性的影响规律,探究滑摩失稳期湿式摩擦副失效预警信息.研究结果表明:建立的湿式摩擦副滑摩温升特性评价体系可以有效评判滑摩温升特性的优良与否和变化情况;摩擦因数和最大径向温差可以作为摩擦片磨合状态判别依据;相比其他因素,净面压对稳定期滑摩温升特性的影响最为显著;失稳期的径向总体温升速率有一定升高,径向温度差异性变大,径向散热差异性显著升高.
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| 关 键 词： | 湿式离合器 磨合期 加速寿命试验 摩擦因数 评价指标 |
| 收稿时间： | 2018/4/27 0:00:00 |
Temperature rise of wet friction pair during sliding in the accelerated life test |
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| WU Jianpeng,MA Biao,LI Heyan,WANG Liyong,MA Chengnan,LIU Jikai and SHI Luqi.Temperature rise of wet friction pair during sliding in the accelerated life test[J].Journal of Harbin Institute of Technology,2019,51(7):103-111. |
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| Authors: | WU Jianpeng MA Biao LI Heyan WANG Liyong MA Chengnan LIU Jikai and SHI Luqi |
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| Affiliation: | School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China,School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China,Shenzhen Technical University, Shenzhen 518118, Guangdong, China,The Ministry of Education Key Laboratory of Modern Measurement and Control Technology, Beijing Information Science and Technology University, Beijing 100192, China,School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China,School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China and School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | To further explore the changing temperature field and the failure mechanism of wet friction pairs, four evaluation indexes of mean temperature rise rate, maximum radial temperature difference, radial temperature non-uniformity coefficient and radial temperature deviation coefficient are introduced, and the evaluation system of sliding temperature rise characteristics is established. Then accelerated life tests are designed based on the actual working conditions. According to the variation role of friction coefficient and the maximum radial temperature difference, the different stages of sliding characteristics are divided. Based on the evaluation system, the role of sliding temperature rise characteristics are studied during running-in period, stable period and unstable period. The influence rules of speed, surface pressure and lubrication volume on temperature rise characteristics are analyzed in stable period. Moreover, the failure warning information of wet friction pairs is explored during unstable period. The study shows that, the evaluation system of sliding temperature rise characteristics can be used to evaluate the performance of sliding temperature, and the friction coefficient and the maximum radial temperature difference can be used as the indexes for judging running-in state of friction disc. The effect of surface pressure on temperature rise characteristic is the most significant compared with other factors. The temperature rise rate, the radial temperature difference and the radial heat dissipation difference increase significantly in unstable period. |
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| Keywords: | wet clutch running-in period accelerated life test friction coefficient evaluation index |
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