基于弹性基础柔性梁的重载轮胎面内胎体与胎侧耦合建模及参数辨识  

Dynamics modeling,modal experiment and parameters identification of heavy loaded radial tires considering the coupled feature of tread,sidewall and rim

作　　者：刘志浩 高钦和 刘准 王旭 LIU Zhihao;GAO Qinhe;LIU Zhun;WANG Xu(Laboratory of Armament Launch Theory & Technology, National Key Discipline,the Rocket Force Engineering University,Xi’ an 710025,China)

机构地区：[1]火箭军工程大学兵器科学与技术军队重点实验室,西安710025

出　　处：《振动与冲击》2018年第6期28-35,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(51475462)

摘　　要：提出一种针对胎侧径向长度和胎体宽度比值(扁平比)接近1的重载子午轮胎的面内中低频试验模态分析、动力学建模和参数辨识方法。针对重载轮胎扁平比大的特点,开展柔性胎体与周向分布胎侧单元耦合的试验模态测试方法研究;建立考虑胎体面内弯曲和充气效应、胎侧惯性力和分段刚度的胎体-周向分布胎侧-轮毂耦合动力学模型,推导轮胎面内耦合固有频率解析解;开展结构参数辨识研究,预测高阶模态固有频率。结果表明:(1)重载轮胎在0~180 Hz和180~300 Hz频段内分别为柔性胎体与周向分布胎侧单元的同向与反向振动;(2)基于柔性胎体-周向分布胎侧单元-轮毂质量块耦合的模态分析和动力学建模方法可准确表征300 Hz范围内重载轮胎面内振动特征。The experimental modal analysis,dynamic modeling and structural parameter identification were employed to research the in-plane vibration modes of heavy-loaded radial tires with larger flat ratio.The coupled characteristics of flexible tread,distributed sidewall element and rim were investigated by means of the experimental modal analysis.Taking the bending and inflation features of the flexible tread and the inertial force and sectional spring of the sidewall into consideration,the coupled kinematics of flexible tread,distributed sidewall element and rim was modeled.The in-plane coupled analytical modal frequency was derived.The structural parameters identification was implemented and the higher order modal frequenies were predicted with the analytic method.The results show that:the flexible tread vibrates in the same/opposite direction with the distributed sidewall within0-180Hz and180-300Hz respectively;the modal analysis and kinetics modeling in consideration of the coupled features of flexible tread,distributed sidewall element and rim can accurately characterize the in-plane vibration features of heavy loaded tires within the frequency band of300Hz.

关 键 词：轮胎动力学 重载子午胎 柔性胎体-周向分布胎侧单元-轮毂质量块耦合 欧拉梁 试验模态分析 参数辨识 

分 类 号：U461[机械工程—车辆工程]