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Contact behaviour and vibrational response of a high-speed train brake friction block
Tribology International ( IF 6.2 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.triboint.2020.106540
Z.Y. Xiang , J.L. Mo , H. Ouyang , F. Massi , B. Tang , Z.R. Zhou

Abstract Brake experiments were conducted on a typical kind of friction blocks of a high-speed train. The friction and wear, interfacial temperature, vibration, and noise generated at or by the brake interface were investigated, and the interrelationship between the vibration response and the contact behaviour of interface was analysed. The results showed the friction coefficient, vibration energy, and noise intensity were lower when the block surface experiences less wear; the friction coefficient and contact angle of the block were important factors affecting the vibration characteristics of the brake system. Moreover, the contact inclination angle increased with the increase in the friction coefficient, and mode coupling of the brake system occurred; as a result, the vibration intensity increased, and squeal occurred.

中文翻译:

高速列车制动摩擦块的接触行为及振动响应

摘要 对一种典型的高速列车摩擦块进行了制动试验。研究了制动界面处或由制动界面产生的摩擦磨损、界面温度、振动和噪声,并分析了振动响应与界面接触行为之间的相互关系。结果表明,当块体表面磨损较小时,其摩擦系数、振动能量和噪声强度较低;制动块的摩擦系数和接触角是影响制动系统振动特性的重要因素。此外,随着摩擦系数的增大,接触倾角增大,制动系统发生模态耦合;结果,振动强度增加,并出现尖叫声。
更新日期:2020-12-01
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