重载轮胎面内柔性环振动建模与试验

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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，该种建模和测试方法可将重载轮胎的分析频率由0~160Hz扩展至300Hz。。

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	刘志浩
	刘钇汛
	张亚
	高钦和
	马栋
	黄通

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

Abstract：The in-plane dynamic modeling and experimental modal analysis method is put forward aiming at researching the heavy loaded radial tire with the ratio of radial length and width closed to 1. The coupled characteristic of tread, sidewall and rim is researched with the flexible ring on elastic foundation and experimental modal test. The coupling dynamics equation is modeled with tread modeled as the flexible ring and the sidewall regarded as the sub-sectional spring with lumped mass. Natural frequencies are analyzed considering the coupling of sidewall and tread with the normal pressure. Modal expansion method is used for solved the dynamic equations and analytic relationship between the inherent frequency and the structural parameters is derived. The structural parameters of the tire are identified by the genetic algorithm based on the experimental modal parameter of heavy-loaded tire and the higher order modal frequency is predicted with the analytic method. Experimental and theoretical result shows that: the modal analysis based on the coupling of tread, sidewall and rim and kinetics modeling method with the flexible ring on elastic foundation and modal expansion method can accurately characterize the vibration feature of heavy loaded tire within the frequency band of 300Hz, compared with the method which only considers the coupling of tread and rim ,and is limited to 180 Hz.

Key words： Tire dynamics；heavy loaded radial tire；coupling feature of tread and sidewall；flexible ring on elastic foundation experimental modal analysis

收稿日期: 2020-05-18 出版日期: 2021-12-15

引用本文:

刘志浩,刘钇汛,张亚,高钦和,马栋,黄通. 重载轮胎面内柔性环振动建模与试验[J]. 振动与冲击, 2021, 40(23): 134-142.
LIU Zhihao, LIU Yixun, ZHANG Ya, GAO Qinhe, MA Dong, HUANG Tong. Modeling and tests of in-plane flexible ring vibration of heavy-duty tire. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(23): 134-142.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I23/134

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