Abstract
This study introduces a yoke-type rail vibration suppression device (YTVSD), and investigates the principles of operation. Firstly, the track model with YTVSD and bottom supported vibration suppression device (BSVSD) are established respectively, and the effects of the YTVSD and the existing BSVSD on the track vibration response are compared. Meanwhile, the crucial parameters of the YTVSD middle elastic layer with different Young's modulus were investigated. Then, the results of the theoretical study were verified by hammer tests, and the effect of YTVSD and BSVSD on the suppression of track vibration was compared. The results show the superior vibration suppression effect of YTVSD, which significantly reduces the vibration level. The vibration DR values of the rail were improved in the low-frequency part, reaching 31.25% at 6.3 Hz. Finally, the response of the track and vehicle of YTVSD and with different parameters of the middle elastic layer of YTVSD were compared, and assessed the effect of YTVSD in reducing the vibration. The results show that YTVSD has a significant reduction in both vehicle and rail system vibration, and can reduce the acceleration level by 4-5 dB. However, as the stiffness of YTVSD increases, the effect of vibration suppression is gradually weakened. Overall, the research results of this paper show that YTVSD is more effective in rail vibration suppression, providing important guidance for the selection of rail vibration suppression device.
Keywords
Get full access to this article
View all access options for this article.