基于交叉型双气室空气互联悬架的全地形车侧倾特性研究

王震; 祝恒佳; 陈晓宇; 张云清

doi:10.6052/0459-1879-20-071

基于交叉型双气室空气互联悬架的全地形车侧倾特性研究

doi: 10.6052/0459-1879-20-071

王震^*,,
祝恒佳^†2),,
陈晓宇^*,
张云清^*3),

^*华中科技大学, 武汉 430074
^†中国民航大学, 天津 300300

基金项目: 1)国家自然科学基金(11772136);航空科学基金(20183367013)

详细信息

通讯作者:
祝恒佳

张云清

中图分类号: TU411.01
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- 被引次数: 0
出版历程
- 收稿日期: 2020-03-15
- 刊出日期: 2020-08-10

ROLL CHARACTERISTICS OF ALL-TERRAIN VEHICLE BASED ON CROSSING DOUBLE AIR CHAMBER PNEUMATICALLY INTERCONNECTED SUSPENSION

Wang Zhen^*
,,
Zhu Hengjia^{†2)
,},
Chen Xiaoyu^*,
Zhang Yunqing^{*3)
,}

^*Huazhong University of Science and Technology, Wuhan 430070, China
^†Civil Aviation University of China, Tianjin 300300, China

摘要

摘要: 设计了一种采用囊式空气弹簧的交叉型双气室空气互联悬架 (PIS 悬架),并应用于侧翻事故发生率极高的全地形车上. 建立了交叉型双气室气体耦合 AMEsim 模型与全地形车整车动力学 ADAMS/Car 模型,通过将前者模型中的空气弹簧弹性力作为整车动力学模型的输入变量,将后者模型中的空气弹簧压缩伸张位移作为气体耦合模型的输入变量,建立了完整的机械-气体耦合多自由度动力学联合仿真模型. 通过 J 型弯高速典型仿真实验对搭载 PIS 悬架、双气室非互联悬架 (UN-PIS 悬架) 和普通螺旋弹簧悬架 (HS 悬架) 的全地形车进行侧倾特性对比研究. 研究结果显示,PIS 悬架若关闭互联管路,则会形成 UN-PIS 非互联状态,使悬架刚度瞬间大幅上升,平顺性瞬间变差,而具有相同垂向刚度的 PIS 悬架与 HS 悬架,前者能够提供更多的侧倾角刚度. 研究了气路系统中影响动态侧倾特性的相关因子,包括连接管路管长、管径、附加气室容积. 研究表明,互联管路管长越小,越有利于提升全地形车侧倾特性,存在临界管径,管径小于或大于该值时,均会小幅度提升侧倾特性,附加气室容积越小,侧倾角刚度越大,为 PIS 悬架气路系统设计提供理论依据.
- 交叉型双气室空气互联悬架 /
- 全地形车 /
- 侧倾特性 /
- 动力学分析
Abstract: For the all-terrain vehicle with extremely high incidence of rollover accidents, a cross-type double air chamber pneumatically interconnection suspension using a capsule air spring is designed. A crossing double air chamber gas coupling AMEsim model and an all-terrain vehicle dynamics ADAMS/Car model are established. By taking the change of elastic force of air spring in the former model as the input variable of the vehicle dynamics model, and the compressional displacement of air spring in the latter model as the input variable of the gas coupling model, a complete mechanical-pneumatically coupling multi-degree of freedom dynamic joint simulation model is established. The roll characteristics of an all-terrain vehicle equipped with a crossing double air chamber pneumatically interconnected suspension(PIS), a crossing double air chamber pneumatically unconnected suspension(UN-PIS), and a common helical spring suspension(HS) are compared with the simulation experimental conditions. The results show that if the PIS system closes the interconnection pipeline, the UN-PIS system will be formed, which causes the suspension stiffness to rise sharply in an instant and the ride performance to deteriorate in an instant. On the premise of guarantee consistent vertical stiffness, PIS can provide greater lateral stiffness than HS. The factors affecting the dynamic roll characteristics in the gas pipeline system are researched, including the pipe length, pipe diameter and the volume of additional air chamber. The research shows that the shorter the pipe length is, the more beneficial it is to improve the roll characteristics of all-terrain vehicles. And there is a critical pipe diameter, when the pipe diameter is less than or greater than this value, the roll characteristics will be slightly improved. And the smaller the volume of the additional air chamber, the greater the lateral stiffness. Which provides a theoretical basis for the design of PIS system.
- crossing double air chamber pneumatically interconnected suspension /
- all-terrain vehicle /
- roll characteristics /
- dynamic analysis

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