油气悬挂式履带车辆联合仿真建模与响应分析

Joint Simulation Modeling and Response Analysis of Hydro-Pneumatic Suspension Tracked Vehicle

为分析油气悬挂式履带车辆行驶过程中的动态特征,基于RecurDyn和MATLAB/Simulink搭建悬挂行走系统联合仿真模型.采用RecurDyn完成悬挂行走系统几何模型的构建及装配,在Simulink中实现油气悬挂弹性力和阻尼力的求解,通过数据交互的方式实现二者的联合求解.开展随机路面激励下的响应特性分析,分别观测负重轮加速度、油气悬挂受力、车体质心位移和加速度等响应曲线.结果表明:1号和6号负重轮上的加速度较大,且1号油气悬挂上的受力要明显大于其他油气悬挂;车体会从启动时的低频振动过渡到运行状态下的高频振动.研究结果可为悬挂行走系统的优化设计提供重要的参考依据.

Based on RecurDyn and MATLAB/Simulink,a joint simulation model of suspension walking system is established to analyze the dynamic characteristics of hydro-pneumatic suspension tracked vehicle.In RecurDyn,the geometric model of suspension walking system is constructed and assembled.The elastic force and damping force of hydro-pneumatic suspension are solved in Simulink.The joint solution of the two is realized through data interaction.Then,the response characteristics under random road excitation are analyzed,and the response curves,such as acceleration of wheel,force of hydro-pneumatic suspension,displacement of tracked body mass center and its acceleration are observed respectively.The results show that the accelerations on the No.1 and No.6 wheels are larger,and the force on the No.1 hydro-pneumatic suspension is larger than that on other hydropneumatic suspensions.The tracked body will start in a low frequency vibration,and then transition to high frequency vibration of running state.The research results can provide reference for the optimization design of suspension walking system.