乘用车底盘橡胶支撑动刚度数学模型浅析

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中图分类号：U463 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250163

ABrief Analysisof theMathematical Model of theDynamic Stiffness ofRubber Supports for Passenger Vehicle Chassis

Zhao Leilei， Yan Zhizhong， Liu Chaofeng （SAICVolkswagen Automotive Co.，Ltd.， Shanghai 201805）

Abstract：To accurately establishamathematical model of the dynamic stiffess of rubber supports for passenger car chassis，which isused fordynamic simulation，performancepredictionandoptimization，this study comparatively investigates thedynamic characteristicsof conventional rubber supportsand hydraulicrubbersupports，deducesand establishes their mathematical models，andanalyzes the diferencesin parameter characteristics of diferent typesof rubbersupports.Aconcise and intuitivecharacterizationmethod forthe dynamic stiffness modelisproposed inthe research：hydraulic rubbersupportsmainly exhibitthestiffness-damping （K-C）parallel characteristic，while conventional rubber supports mainly exhibit the stiffness-damping series characteristic.

Keywords：Rubberbushing，Dynamicstiffness，Mathematicalmode

1前言

橡胶支撑是乘用车底盘系统中连接悬架、副车架与车身的关键弹性元件，主要功能为传递载荷，并隔离与衰减来自路面和动力总成的振动冲击，其动刚度与阻尼特性直接影响车辆的乘坐舒适性与操纵稳定性。（剩余3838字）