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Research on floating slab track isolator based on mixed media theory
Zheng Fang,Chuanzhi Geng 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.10
To improve the control effect of the floating slab track system under lowfrequency vibration, a vibration isolator scheme based on a liquid and gas mixture is proposed. Taking the elastic element of the air cushion as the research object, the fluid-structure coupling theory is used to analyze its deformation law under high load conditions, and the nonlinear stiffness calculation method of the liquid and gas mixture isolator is given and verified. Using the theory of mixed media, the parameters and structure of the liquid-gas mixture isolator are designed and trial-manufactured. The wheel load drop is used to analyze and compare the lowfrequency vibration reduction effects of different elastic supports. The vibration reduction effect of the liquid and gas mixture isolator relative to the steel spring isolator and rubber isolator is 4.75 dB and 10.12 dB, respectively, showing a good comprehensive vibration control effect.