A carbody chattering phenomenon accompanied by bogie hunting movement was investigated. The online test results showed that the vehicle at a large tread conicity state exhibited insufficient stability when running at higher speeds, causing the hunting frequency of the bogie to continuously increase and approach the diamond-shaped deformation modal frequency of the carbody, consequently causing the carbody to chatter. To improve the running stability of the vehicle and to suppress the carbody chattering, a two-step progressive optimisation method that combined analytical optimisation and simulation optimisation to optimise the parameters of the anti-yaw damper was proposed. Furthermore, the effect of optimisation was experimentally verified. Results showed that after optimisation, the critical speed of the vehicle under the condition of worn wheel was significantly enlarged, the bogie exhibited no obvious hunting motion, carbody chatter was significantly alleviated, and both the ride quality and the curve passing performance were improved.

研究了伴随转向架狩猎运动的车身颤振现象。在线测试结果表明，处于较大锥面状态的车辆在高速行驶时表现出不足的稳定性，导致转向架的摆动频率不断增加并接近车体的菱形变形模态频率，从而导致车体喋喋不休。为了提高车辆的行驶稳定性并抑制车身颤振，提出了一种将分析优化和仿真优化相结合的两步渐进优化方法，以优化防偏航减振器的参数。此外，通过实验验证了优化的效果。结果显示，经过优化，