考虑轮径影响的履带式车辆振动分析  

Vibration Analysis of Tracked Vehicle Considering Wheel′s Diameter

作　　者：孙中兴[1] 唐力伟[1] 汪伟[1] 歹英杰 

机构地区：[1]军械工程学院火炮工程系,石家庄050003

出　　处：《振动．测试与诊断》2016年第6期1103-1108,共6页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51575523)

摘　　要：在车辆垂向振动的研究中往往把路面不平度直接作为路面对车辆的位移激励,未考虑车轮与路面间的几何关系对位移激励的影响。针对这种情况,分析了履带式车辆负重轮的轮径对车辆垂向振动的影响机理,推导了考虑履带滤波效应和负重轮轮径的车辆等效路面位移激励的计算方法,建立了描述车辆竖向振动的状态方程及其仿真模型,并针对正弦路面波形、周期性矩阵脉冲波形、单位冲击波形以及实际路面波形下车辆的振动进行了仿真分析。结果表明,路面位移激励只有考虑轮径的影响才能反映出车辆冲击、振荡、"平滑"等在行驶过程中与路面的真实相互作用情况。试验结果证明了所述等效路面位移激励算法和正弦路面下车辆的振动特性的正确性。Generally,the vibration analysis of vehicles takes road roughness as displacement excitation,ignoring the effect of the geometric relationship between wheel and road.This paper analyzes the influence of the crawler-vehicle bogie wheel′s diameter on the displacement excitation and deduces the equations for the calculation of the displacement excitation,considering the influence of the track filtering effect and wheel′s diameter.Then,the vertical vibration state equations and corresponding simulation model were formulated,and the vibration of a vehicle moving on the wavy and practical road were analyzed.The results showed that the analysis that considered the crawler-vehicle bogie wheel′s diameter better simulated the practical conditions with more information.Finally,experiments verified the ability of the proposed method to calculate displacement excitation.

关 键 词：履带式车辆 路面不平度 轮径 等效位移激励 状态方程 

分 类 号：TJ306[兵器科学与技术—火炮、自动武器与弹药工程]