Wan Shuaishuai, Song Leiming, Hu Xiaojun, Lin Hao, Zhang Hu
School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, China.
Sci Prog. 2024 Oct-Dec;107(4):368504241292684. doi: 10.1177/00368504241292684.
With the increasing speed of high-speed train, it is more and more difficult to reduce the vibration and noise inside the train. The floor of the train, as a carriage component in direct contact with passengers, is of great significance to improve its vibration and sound isolation performance to ensure the comfort of passengers. In this article, a floor vibration isolator with quasi-zero stiffness is designed based on the dimensional parameters of the traditional floor vibration isolator, and the vibration isolation performance is analyzed by the finite element model of the floor vibration isolator from the static and dynamics aspects, respectively. The load-displacement curves of the floor vibration isolator are obtained through static simulation calculations, and the dynamic analysis of the floor vibration isolator is carried out by simulation methods, which verifies the low-frequency vibration isolation performance of the floor vibration isolator under different working conditions, and the vibration isolator has a good prospect for development.
随着高速列车速度的不断提高，降低列车内部的振动和噪声变得越来越困难。列车地板作为与乘客直接接触的车厢部件，提高其隔振和隔音性能对于确保乘客的舒适度具有重要意义。本文基于传统地板隔振器的尺寸参数设计了一种准零刚度地板隔振器，并分别从静态和动态方面通过地板隔振器的有限元模型分析其隔振性能。通过静态模拟计算得到地板隔振器的载荷-位移曲线，并采用模拟方法对地板隔振器进行动态分析，验证了地板隔振器在不同工况下的低频隔振性能，该隔振器具有良好的发展前景。
