质量车运动过程的动力学及偏航性能分析
鲍敬源，毛冉成，孙辉艺
（1.海装武汉局驻武汉地区第二军事代表室，湖北 武汉 430064；2.西南交通大学 牵引动力国家重点实验室，四川 成都 610031）
摘要：针对质量车的运动特性，基于多体动力学理论对质量车进行了动力学建模，载荷考虑了轮胎的非线性特性，对比分析了不同工况下的质量车动力学指标与偏航特性。结果表明，在运动过程中，质量车的垂向位移变化较小；纵向速度呈线性增加，纵向加速度与纵向载荷特性曲线相对应；前轮的垂向载荷显著大于后轮，左轮略大于右轮。此外，当质量车以相同末速度运行时，车体的最大横移量与最大点头角加速度随着质量车的配重增大而减小，而最大点头角速度趋势相反。本文研究成果能对质量车的设计及动力学分析提供一定的参考。
关键词：质量车；运动过程；动力学性能；偏航特性
中图分类号：TH113 文献标志码：A doi：10.3969/j.issn.1006-0316.2021.10.008
文章编号：1006-0316 (2021) 10-0053-06
Dynamic and Yaw Performances Analysis in the Process of Motion for Mass Simulation Vehicle
BAO Jingyuan，MAO Rancheng，SUN Huiyi
( 1.The Second Military Representative Office of Haizhuang Wuhan Bureau, Wuhan 430064, China;2.State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China )
Abstract：Aiming at the characteristics of the mass simulation vehicle, based on the multi-body dynamics theory, the dynamics model of the mass simulation vehicle was set up. Also, the load takes into account the nonlinear characteristics of the tire, and the dynamic index of the mass simulation vehicle under different load conditions was compared and analyzed. The results demonstrate that in the process of motion, the vertical displacement of the mass simulation vehicle changes little; the longitudinal speed increases linearly, with its longitudinal acceleration corresponding to the longitudinal load characteristic curve. In addition, the vertical load of the front wheel is significantly greater than the rear wheel, and the left wheel is slightly larger than the right wheel. Furthermore, when the mass simulation vehicle is running at the same speed, the maximum lateral displacement and the maximum pitch acceleration of the car body decrease with the increase of its counterweight, while the trend of the maximum pitch angular velocity is opposite. The research results can provide a certain reference for the design and dynamics analysis for the mass simulation vehicle.
Key words：mass simulation vehicle；motion process；dynamics performance；yaw behavior
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收稿日期：2021-2-24
作者简介：鲍敬源（1977－），男，上海人，硕士，工程师，主要研究方向为舰船航空保障工程，E-mail：billbjy@sina.com。
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