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

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (23) : 134-142.

LIU Zhihao, LIU Yixun, ZHANG Ya, GAO Qinhe, MA Dong, HUANG Tong

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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

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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[J]. Journal of Vibration and Shock, 2021, 40(23): 134-142

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