重载轮胎面内柔性环振动建模与试验  

Modeling and tests of in-plane flexible ring vibration of heavy-duty tire

作　　者：刘志浩 刘钇汛 张亚 高钦和 马栋 黄通 LIU Zhihao;LIU Yixun;ZHANG Ya;GAO Qinhe;MA Dong;HUANG Tong(Laboratory of Armament Launch Theory&Technology,Rocket Force University of Engineering,Xi’an 710025,Shaanxi,China)

机构地区：[1]火箭军工程大学兵器科学与技术国家重点学科实验室,西安710025

出　　处：《振动与冲击》2021年第23期134-142,165,共10页Journal of Vibration and Shock

基　　金：国家自然科学基金(51905541);陕西省自然科学基础研究计划(2020JQ487);陕西省高校科协青年人才托举计划(20190412)。

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振动建模与试验模态分析方法。基于弹性基础柔性环模型对重载轮胎的面内振动进行分析,建立胎体柔性环模型,并考虑胎侧惯性力和分段刚度对胎体与轮辋耦合振动的影响,建立轮辋固定支撑条件下的重载轮胎面内耦合振动动力学方程;利用模态展开方法,推导轮胎胎体与胎侧耦合固有频率的解析解;基于重载轮胎面内试验模态参数,利用遗传算法对轮胎的结构参数进行辨识,并开展高阶模态固有频率预测研究。理论分析和模态试验结果均表明:基于胎体与胎侧耦合的试验模态分析和基于弹性基础柔性环模型的建模方法可准确表征重载轮胎胎体和胎侧的耦合振动特征,该建模和测试方法可将重载轮胎的分析频率由0~160 Hz扩展至0~300 Hz。Here,a method of in-plane vibration modeling and test modal analysis for heavy-duty radial tire with the tire side radial length to carcass width ratio(flat ratio)being close to 1 was proposed.Based on the elastic foundation flexible ring model,the in-plane vibration of heavy-duty tire was analyzed,and the model of tire body flexible ring was established.Considering effects of tire side inertia force and segment stiffness on tire-rim coupled vibration,the dynamic equation of in-plane coupled vibration of heavy-duty tire was established under the condition of rim fixed support.The analytical solution to tire body-sidewall coupled natural frequency was derived using the mode expansion method.Based on in-plane test modal parameters of heavy-duty tire,structural parameters of heavy-duty tire were identified with the genetic algorithm,and the prediction study of higher order modes’natural frequencies was performed.The theoretical analysis and modal test results showed that the test modal analysis based on coupling of tire body-sidewall and the modeling method based on the elastic foundation flexible ring model can accurately characterize tire body-sidewall coupled vibration characteristics of heavy-duty tire;the proposed modeling and test method can extend the frequency analysis range of heavy-duty tire from 0-160 Hz to 0-300 Hz.

关 键 词：轮胎动力学 重载子午胎 胎体与胎侧耦合 弹性基础柔性环 试验模态 

分 类 号：U461[机械工程—车辆工程]