Modeling and structural parameters optimizing of a shock absorber with multiple valve plates

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (22) : 121-129.

HUANG Caixia1,2，WU Xin1，SHU Xiong1，WANG Jiande1，WU Chenxi1

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Abstract

The ride comfort and handling stability of the vehicle are directly affected by the damping characteristics of shock absorbers, which are essential components of the suspension. Inversely calculating the structural parameters of the shock absorber after determining the optimal damping characteristic curve is the core technology of suspension design. Taking the shock absorber with multiple valve plates of the bus front suspension as an example, the physical model is established based on the mechanism of damping force generation, and the accuracy of the model is verified through experiments of damper damping characteristics. After the dynamics model of the bus with air suspension is established, the optimal damping characteristic curve of the shock absorber is obtained by using handling stability as a constraint and ride comfort as the optimization objective. With the optimal damping characteristic curve as the objective, the physical model parameters of the shock absorber with multiple valve plates are optimized, and the structural parameters of the shock absorber are obtained. After producing the product prototype using optimized structural parameters, experimental results demonstrate that the optimized damper structural parameters can reliably achieve the target damping characteristics.

Key words

Parameter optimizing / Damping characteristics / Shock absorber / Multiple valve plates / Structural parameter

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HUANG Caixia1,2，WU Xin1，SHU Xiong1，WANG Jiande1，WU Chenxi1. Modeling and structural parameters optimizing of a shock absorber with multiple valve plates[J]. Journal of Vibration and Shock, 2023, 42(22): 121-129

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