Research on Test Method and Dynamic Characteristics of the Rail System with Multi-player Elastic Components

doi:10.3901/JME.2018.08.074

Abstract

Abstract: For the sake of making a research on the dynamic characteristics of the rail system with multi-layer elastic components, a new test method is presented. For obtaining the reliable data, a simulated railway system, which is 25 m long, is built as the basis, and a loading device is also designed to generating the force on the rail by train wheels. Based on the hammering method and modal analysis, the dynamic characteristics of the system are provided and then the vibration transmissibility under different fasteners, preloads etc. it can be concluded that the vibration is reduced when the frequency is more than 40 Hz, and it is increased when the frequency is less than 40 Hz after adopting the vibration isolator. The vibration transmissibility, when the frequency is more than 20 Hz and less than 100 Hz, is increased, and the vibration transmissibility at other frequency is decreased as the increasing of the preload. When the stiffness of the fastener is decreased, the vibration transmissibility and the peak value are increased when the frequency is less than 28 Hz, and they are decreased at other frequency. The tested method and its result in some extent can support the research of the dynamic characteristics and analysis of the vibration.

Key words: dynamic characteristics, modal analysis, rail system with multi-player elastic components, vibration transmissibility

CLC Number:

U125

XU Guanghui, WANG Anbin, SONG Yuechao, WANG Zhiqiang. Research on Test Method and Dynamic Characteristics of the Rail System with Multi-player Elastic Components[J]. Journal of Mechanical Engineering, 2018, 54(8): 74-82.

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