| Study on Dynamic Performance of Rubber-liquid Composite Spring for Rail Vehicle |
| Received:May 20, 2025 Revised:May 20, 2025 |
| DOI：10.12136/j.issn.1000-890X.2025.11.0803 |
| Key Words: rubber-liquid composite spring；lumped parameter model；dynamic performance；dynamic stiffness；loss angle |
| Author Name | Affiliation | E-mail | | LIU Guijie* | Zhuzhou Times New Material Technology Co.，Ltd | 80525034@qq.com | | ZOU Bo | Zhuzhou Times New Material Technology Co.，Ltd | | | DING Xingwu | Zhuzhou Times New Material Technology Co.，Ltd | | | BU Jiling | Zhuzhou Times New Material Technology Co.，Ltd | | | ZOU Jicao | Zhuzhou Times New Material Technology Co.，Ltd | | | ZHOU Min | Zhuzhou Times New Material Technology Co.，Ltd | |
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| Abstract: |
| he dynamic performance of the rubber-liquid composite spring for rail vehicles（referred to as composite spring） was studied.The theoretical calculation of the dynamic performance of the composite spring mainly adopted a lumped parameter model，and the key parameters of the model were the rubber main spring parameter，the liquid chamber volume stiffness，the inertia channel parameter and initial state parameter，which were determined by the rubber main spring structure，inertia channel structure and load etc，reflecting the comprehensive influence of rubber main spring structure，liquid damping and load on the dynamic performance of the composite spring.Compared with the experimental values，the error of the peak dynamic stiffness of the composite spring using the simulation calculation method was 10.6%，and the error of the peak loss angle was 3.6%，indicating high simulation calculation accuracy.The influence of key parameters of the composite spring on the dynamic performance was mainly reflected in the peak dynamic stiffness and peak loss angle and their corresponding frequencies.This study could provide reference for the design and application of composite springs. |
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