某前下控制臂衬套压装影响因素仿真

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中图分类号：U463.33；TB115.1 文献标志码：B

Simulation on press-fitting influencing factor of front lower control arm bushing

SHENG Yun1，2， QI Jun1，2

（1.Shanghai Huizhong Automotive Manufacturing Co.，Ltd.，Shanghai 2OO122，China； 2.Shanghai Automotive ChasisElectronicsandLightweightEngineeringTechnologyResearch Center，Shanghai 2O122，China）

Abstract： In order to obtain the influencing factors and laws of bushing press-fiting，a two-dimensional finite element simulation model for bushing press-fiting is established using a certain stamping formed front lower control arm as the research object.The relevant factors that may aect the pressing-in force and pressing-out force of the bushing are sorted out from the perspectives of the control arm body， bushing，and their fit. The quantitative influence law of single factor on the pressing-in force and pressing-out force is obtained by simulation. The results show that： the thickness of outer ring sleeve of the bushing is the main influencing factor for the bushing pressing-in force；the thickness of the bushing outer ring sleeve is the main influencing factor for the pressing-out force while the interference is 0.3 mm；the draft angle of the control arm flange hole is the main influencing factor for the pressing-out force while the interference is 0.6mm and 0.9mm

Key words： bushing；press-fiting； interference connection； influencing factor； simulation

0 引言

衬套是整车悬架系统中的关键弹性元件，其刚度和阻尼特性对整车动态性能有着重要影响，设计衬套时需要综合考虑安装空间、受力状态及性能、寿命等因素[1]。（剩余6085字）