面向全恢复系数的碰摩故障接触力分析与试验研究

doi:10.3901/JME.2024.22.403

机械工程学报 ›› 2024, Vol. 60 ›› Issue (22): 403-414.doi: 10.3901/JME.2024.22.403

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面向全恢复系数的碰摩故障接触力分析与试验研究

凡云峰¹, 俞铭宏², 王浩³, 马波⁴, 冯坤^1,4, 江志农^1,5, 胡明辉^1,5

1. 北京化工大学高端压缩机及系统技术全国重点实验室北京 100029;
2. 中国人民解放军 32207部队榆林 719006;
3. 中国舰船研究院北京 100192;
4. 北京化工大学高端机械装备健康监控与自愈化北京市重点实验室北京 100029;
5. 北京化工大学发动机健康监控及网络化教育部重点实验室北京 100029

收稿日期:2024-01-08 修回日期:2024-08-23 出版日期:2024-11-20 发布日期:2025-01-02
作者简介:凡云峰,男,1998年出生。主要研究方向为故障诊断。E-mail:fanyf2020@163.com;胡明辉(通信作者),男,1990年出生,博士,副教授,硕士研究生导师。主要研究方向为航空发动机故障诊断与振动抑制。E-mail:humh2008@163.com

Analysis and Experimental Study on Contact Force of Rub-impact Fault Oriented to Full Coefficient of Restitution

FAN Yunfeng¹, YU Minghong², WANG Hao³, MA Bo⁴, FENG Kun^1,4, JIANG Zhinong^1,5, HU Minghui^1,5

1. State Key Laboratory of High-end Compressor and System Technology, Beijing University of Chemical Technology, Beijing 100029;
2. No. 32207 Troops of PLA, Yulin 719006;
3. China Ship Research and Development Academy, Beijing 100192;
4. Beijing Key Laboratory of High-end Mechanical Equipment Health Monitoring and Self-recovery, Beijing University of Chemical Technology, Beijing 100029;
5. Key Lab of Engine Health Monitoring-control and Networking of Ministry of Education, Beijing University of Chemical Technology, Beijing 100029

Received:2024-01-08 Revised:2024-08-23 Online:2024-11-20 Published:2025-01-02
About author:10.3901/JME.2024.22.403

摘要/Abstract

摘要： 碰摩故障是旋转机械的常见故障之一。在研究碰摩故障产生机理及其造成危害的过程中，碰摩力起着至关重要的作用，而分析碰摩力时最重要的问题是确定正碰力，也即是接触力。一般常用的接触力模型是阻尼、刚度等的函数。分析碰撞过程，推导出接触力中滞后阻尼比的数值精确解并详细考虑在碰撞过程中的不同类型的能量损失，得到了实际滞后阻尼比应小于数值精确解的结论。之后通过提出等效系数对能量损失分析过程进行完善，并以实际滞后阻尼比应小于数值精确解的结论为选择条件，得到适用于全恢复系数的接触力新模型。进而利用新模型分析了经典的弹跳球问题，通过弹跳球模型的仿真试验得到碰撞过程中的诸多特点与性质，最后进行了小球的碰撞试验，用试验验证了模型的有效性。

关键词: 碰摩故障, 接触力模型, 滞后阻尼比, 能量损失, 恢复系数

Abstract: The rubbing fault is one of the frequent faults in engineering. In the process of studying the mechanism of rubbing fault and the harm it causes, the rubbing force plays a very important role. The most important problem in analyzing the friction force is to obtain the positive impact force, also known as the contact force. The commonly used contact force model is a function of damping, stiffness and so on. The collision process is analyzed, the numerically exact solution of the hysteresis damping ratio in the contact force model is derived and the different types of energy losses in the collision process are considered in detail, and the conclusion that the actual hysteresis damping ratio should be smaller than the numerically exact solution is obtained. After that, the energy loss analysis process is improved by proposing the equivalence coefficients, and the new contact force model with full coefficient of restitution is obtained by taking the conclusion that the actual hysteresis damping ratio should be smaller than the numerically accurate solution as the selection condition. Then the classical bouncing ball problem is analyzed by using the new model, and many characteristics and properties in the collision process are obtained through the simulation experiment of the bouncing ball model, and finally the collision experiment of the small ball is carried out, and the validity of the model is verified by experiment.

Key words: rubbing fault, contact force model, hysteresis damping ratio, energy loss, COR

中图分类号:

TH17

凡云峰, 俞铭宏, 王浩, 马波, 冯坤, 江志农, 胡明辉. 面向全恢复系数的碰摩故障接触力分析与试验研究[J]. 机械工程学报, 2024, 60(22): 403-414.

FAN Yunfeng, YU Minghong, WANG Hao, MA Bo, FENG Kun, JIANG Zhinong, HU Minghui. Analysis and Experimental Study on Contact Force of Rub-impact Fault Oriented to Full Coefficient of Restitution[J]. Journal of Mechanical Engineering, 2024, 60(22): 403-414.

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面向全恢复系数的碰摩故障接触力分析与试验研究

Analysis and Experimental Study on Contact Force of Rub-impact Fault Oriented to Full Coefficient of Restitution

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