矿用宽体车互联式油气悬架系统平顺性分析
Ride comfort analysis of interconnected hydro-pneumatic suspension system of mine wide-body vehicle
靳航 1雷贤卿 1周鑫 1南迪1
作者信息
- 1. 河南科技大学 机电工程学院,河南 洛阳 471003
- 折叠
摘要
采用钢板弹簧悬架的矿用宽体车难以获得良好的行驶平顺性,为此,提出了一种刚度阻尼可调的互联式油气悬架系统.首先,阐述了互联式油气悬架系统的工作原理,建立了油气悬架系统的数学模型;其次,运用AMESim软件搭建了互联式油气悬架系统和钢板弹簧悬架的仿真模型,确定了仿真模型中的主要参数;最后,在D级随机路面激励下进行了匀速和加速-制动运行工况的车辆行驶平顺性仿真研究,并对仿真结果进行了分析.研究结果表明:与钢板弹簧悬架相比,匀速和加速-制动的空载工况下,互联式油气悬架系统的车身加速度均方根值分别下降了38.7%和38.8%,车轮动载荷均方根值分别增加了3.1%和0.5%,不影响车轮的接地性,悬架动挠度均方根值分别增加了41.6%和39.7%,悬架撞击限位块的概率小于0.1%,满足设计要求;匀速和加速-制动的满载工况下,互联式油气悬架系统的车身加速度、车轮动载荷、悬架动挠度三项平顺性评价指标均得到改善.该结果证明互联式油气悬架系统可提升车辆的行驶平顺性,为矿用宽体车油气悬架系统设计提供参考.
Abstract
It is difficult to obtain good ride comfort for mine wide-body vehicle with leaf spring suspension.Therefore,an interconnected hydro-pneumatic suspension system with adjustable stiffness and damping was proposed.Firstly,the working principle of interconnected hydro-pneumatic suspension system was described.And the mathematical model of hydro-pneumatic suspension system was established.Then,the simulation model of interconnected hydro-pneumatic suspension system and leaf spring suspension was built by AMESim software.The main parameters of the simulation model were determined.Finally,under D-class random road excitation,the simulation study on vehicle ride comfort under uniform speed and acceleration-braking conditions was carried out.And the simulation results were analyzed.The research results indicate that compared with the leaf spring suspension,under the empty load condition of uniform speed and acceleration-braking,the root mean square of body acceleration of the interconnected hydro-pneumatic suspension system is respectively decreased by 38.7% and38.8% .The root mean square of the wheel dynamic load is respectively increased by 3.1% and 0.5% and grounding of the wheel is not affected.The root mean square of suspension dynamic deflection is respectively increased by 41.6% and 39.7% .The probability of suspension hitting the limit block is less than 0.1%,meeting the design requirements.Under the full load conditions of uniform speed and acceleration-braking,the three ride comfort evaluation indexes of body acceleration,wheel dynamic load and suspension dynamic deflection of the interconnected hydro-pneumatic suspension system are improved.The results show that the interconnected hydro-pneumatic suspension system can improve ride comfort of the vehicle,which can provide a reference for the design of hydro-pneumatic suspension system for mine wide-body vehicle.
关键词
钢板弹簧悬架/车辆行驶平顺性/油气悬架系统数学模型/刚度阻尼/D级随机路面/匀速工况/加速-制动工况Key words
leaf spring suspension/vehicle ride comfort/hydro-pneumatic suspension mathematical model/stiffness and damping/D-class random road/uniform working condition/acceleration-braking condition引用本文复制引用
基金项目
山东省重点研发计划项目(2019GHZ013)
扬州市科技计划项目(YZ2019019)
出版年
2024
NETL
NSTL
万方数据