控制臂后衬套开口角度对悬架零件及性能的影响分析

李中洋　钟杰铭　刘仕冬　林建华

摘 要：基于ABAQUS软件分析控制臂后衬套开口角度对衬套受力、控制臂强度的影响，为控制臂及衬套的结构设计和空间布置提供指导，提高零件设计的可靠性。基于Adams/Car軟件在建立的麦弗逊前悬架弹性连接运动学模型中分析控制臂后衬套开口角度对车轮定位参数的影响，为悬架的性能优化设计提供理论依据。梳理后衬套开口角度对衬套受力、控制臂强度、悬架性能的影响，为悬架零件设计及性能优化提供借鉴经验。

关键词：后衬套 开口角度 强度 车轮定位参数

Impact Analysis of Control Arm Rear Bushing Opening Angle on Suspension Parts and Performance

Li Zhongyang Zhong Jieming Liu Shidong Lin Jianhua

Abstract： The influence of control arm rear bushing opening angle on the bushing strength and control arm strength was analyzed based on ABAQUS software， which can provide guidance for design and arrangement of control arm and bushing to improve reliability design of parts. The influence of control arm rear bushing opening angle on wheel positioning parameters was analyzed by the multi-body dynamics software Adams/Car in the kinematics model of McPherson front suspension elastic connection， which can provide theoretical foundation for the optimization design of suspension performance. The influence of rear bushing opening angle on the bushing strength， the strength of the control arm and the performance of the suspension was analyzed to provide reference experience for design and performance optimization of suspension part.

Key words：Rear bushing; Opening angle; Strength; Wheel positioning parameters

1 前言

悬架K特性是车轮在弹簧变形过程和转向时的运动;悬架C特性是轮胎和路面之间的力和力矩引起的车轮定位参数的变化，二者统称为悬架运动学与弹性运动学[1]，简称K&C特性。作为汽车悬架的弹性连接元件，橡胶衬套可以有效缓和路面不平传给车架（或车身）的冲击，降低来自地面、轮胎输入的噪声。橡胶衬套的安装位置、方向、结构等不仅影响控制臂的强度及模态，也影响着车辆系统的悬架刚度和悬架K&C特性[2]。

梁家玮[3]等通过分析汽车悬架分体式衬套下控制臂的约束模态，对控制臂及衬套总成的薄弱环节提出优化思路。袁世林[4]等通过对摆臂的强度分析进行结构优化，满足摆臂静刚度和屈曲设计要求。杨新军、陈宝[5-6]等在建立的麦弗逊前悬架刚柔耦合模型中，利用Adams /Insight对悬架部分硬点进行灵敏度分析并优化硬点坐标，实现车轮定位参数在合理范围内的变化，改善悬架性能。……