T racked vehicles have the advantages of less ground pressure,better performance, etc.,but the bad working environment makes it more vibrant,which has a great influence on the ride comfort.Therefore,a method for analyzing the ride comfort of tracked vehicles based on nonuniform coefficient of link was proposed.Firstly,by analyzing the correlation theory of the nonuniform coefficient of link,it was concluded that the main factors affecting the nonuniform coefficient were the distance of track link and the radius of the root circle of the driving wheel. Then,based on the RecurDyn dynamics software Track (LM)subsystem,the track walking de-vices with nonuniform coefficients of 1.043,1.094 were modeled respectively,and the dynamics simulation was performed under the uniform motion condition of the hard ground,the influence of nonuniform coefficient on vehicle ride comfort was discussed in three aspects,which included the force between the tracked plate and the ground,the force between the tracked plate and the driving wheel,and the force between the supporting wheel and the ground.The results showed that the nonuniform coefficient could be reduced by reducing the distance of track link and the effect of uniformity coefficient of 1.043 on the vehicle ride comfort was significantly greater than that of 1.094.It provides practical reference value for the design and research of tracked vehicles.%履带车辆具有接地比压小、通过性能好等优点,但恶劣的工作环境使履带行走装置受到的振动较大,对其行驶平顺性有很大的影响.为此提出一种基于链环不均匀系数的履带车辆行驶平顺性分析方法.首先,通过分析链环不均匀系数的相关理论,得出影响不均匀系数的主要因素是履带链节距和驱动轮的根圆半径.然后,基于Re-curDyn动力学软件Track(LM)子系统,分别对不均匀系数为1.043和1.094的履带行走装置建模,并且在硬质地面匀速运动工况下进行动力学仿真,分别从履带板与地面间作用力、履带板与驱动轮间作用力、支重轮与地面间作用力三方面分析讨论不均匀系数对车辆平顺性的影响规律.结果表明,通过减小履带链节距可以减小不均匀系数,且链环不均匀系数为1.043时对车辆行驶的平顺性影响显著大于1.094时的,这为履带车辆的设计研究提供了实际的参考价值.
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