液体晃动对槽罐车摆振系统动力学响应的影响分析  

Effects ofliquid sloshingon dynamic responses of a tank truck shimmy system

作　　者：李金辉 卢剑伟[1] 姜俊昭[1] 张磊[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009

出　　处：《振动与冲击》2018年第2期135-141,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(50975071);教育部新世纪优秀人才支持计划项目(NCET-10-0358);安徽省高校省级自然科学研究项目重大项目(KJ2014ZD06)

摘　　要：液体晃动导致槽罐车受力情况变得复杂,从而会对前轮摆振系统动力学响应产生重要影响。以两轴小型槽罐车为例,分析液体晃动过程中液-固耦合作用机理,结合转向系统动力学建模分析,计入转向传动机构运动副间隙的影响,建立了十自由度槽罐车摆振系统动力学分析模型,并应用数值算例考察了液体晃动、车速、间隙等因素对车辆摆振响应的影响。分析结果表明,随着车速增加,液体晃动对摆振响应的影响表现出先抑制后加剧再抑制的现象,最后依据相关结论提出了减小槽罐车摆振的措施。Liquid sloshing makes force-bearing state of a tank truck be complicated,so liquid sloshing has important influences on dynamic responses of the tank truck's front wheel shimmy system. Here,a two-axle tank truck was taken as an example,the liquid-solid interaction mechanism in liquid sloshing process was analyzed. Combining the dynamic modeling analysis of a steering mechanism,a 10-DOF dynamic model for the tank truck shimmy system was established considering the effect of clearance in the motion pair of the tank truck's steering linkage mechanism. Using numerical analysis,the effects of liquid sloshing,vehicle speed and clearance on the vehicle shimmy response were investigated.The analysis showed that with increase in vehicle speed,the influence of liquid sloshing on the shimmy response firstly is inhibitory,then anabatic,and inhibitory again. Finally,some measures to reduce the tank truck's shimmy were proposed according to the corresponding conclusions.

关 键 词：槽罐车 摆振 间隙 拉格朗日方程 液-固耦合 

分 类 号：U461.6[机械工程—车辆工程]