挂载式悬架结构设计及防侧翻性能验证

Structural Design and Anti-roll Performance Verification of Mounted Suspension

车辆侧翻是一种常见的交通安全事故,其中,悬架的动力学性能直接影响到车辆的操纵稳定性和转弯时的侧倾安全性能。针对车辆受到侧向力作用时可能发生侧翻的问题,设计了一套基于“挂载”理念的双叉臂悬架,其特点在于能使车辆在受到侧向力作用时产生与常规悬架相反的侧倾角,从而达成有效预防侧翻事故的目的。首先建立该新型悬架动力学数学模型,基于MATLAB导入参数并通过Adams仿真计算,对比该新型悬架与传统悬架的动力学特性,表明该悬架在不同工况下的各项动力学性能要明显优于传统悬架;最终实车实验也验证该悬架对于防侧翻方面的独特效果,在抗侧倾性能上明显优于传统悬架,证实了该悬架结构理念能够提升车辆操纵稳定性与安全性。可以为赛车、全地形移动机器人等移动机械的悬架结构设计提供参考。

Vehicle rollover is a common traffic safety accident,in which the dynamic performance of the suspension directly affects the vehicle's handling stability and roll safety performance during cornering.To address the issue of vehicle rollovers when subjected to lateral forces,a dual wishbone suspension based on the“mounting”concept is designed.Meanwhile,it can help vehicle produce the opposite roll angle to conventional suspensions when subjected to lateral forces,thus achieving effect of preventing rollover accidents.Firstly,the dynamic mathematical model of the proposed suspension is established.Parameters are imported into MATLAB and simulated using Adams to compare the dynamic characteristics of this new suspension with traditional ones.The simulation results show that the dynamic performance of the suspension under different working conditions is significantly better than that of conventional suspension.Finally,real vehicle experiments verify the unique effect of the suspension on anti-rollover,and shows superior anti-rollover performance compared to traditional suspensions,confirming that our proposed suspension structure can improve vehicle handling stability and safety.This concept can serve as a reference for the suspension structure design of mobile machinery such as racing cars and all terrain mobile robots.