Abstract In this work, the effect of friction block configuration on the brake squeal of a high-speed train is investigated. Three friction block configurations of simplified brake pads are used in the brake tests. The test results indicate that friction block configuration has a significant effect on the noise performance of the brake system. Finite element analysis reveals that the break squeal occurs due to the mode coupling of the brake system. Different friction block configurations lead to different mode characteristics, contact behaviors, and noise performances. Moreover, a full-scale finite element model of the high-speed train brake system is established. The simulation results show that the friction block configuration with a relatively even distribution of the interfacial contact pressure has a relatively lower squeal propensity. Therefore, adjustment of the friction block configuration is an efficient method for noise reduction of railway brakes.

中文翻译：

---

不同摩擦块配置的高速列车制动尖叫声

摘要 在这项工作中，研究了摩擦块配置对高速列车制动尖叫的影响。制动测试中使用了三种简化制动片的摩擦块配置。试验结果表明，摩擦块配置对制动系统的噪声性能有显着影响。有限元分析表明，制动系统的模式耦合会导致刹车尖叫。不同的摩擦块配置导致不同的模式特性、接触行为和噪声性能。此外，建立了高速列车制动系统的全尺寸有限元模型。仿真结果表明，界面接触压力分布相对均匀的摩擦块配置具有相对较低的尖叫倾向。