Kinematic dynamics Modeling, Modal Experiment and Parameters Identification of Heavy Loaded Radial Tire considering coupled feature of tread, sidewall and rim
LIU Zhihao1，GAO Qinhe1，LIU Zhun1， WANG Xu1
1. Lab. of Armament Launch Theory & Technology, National Key Discipline,the Rocket Force Engineering University, Xi’an 710025, Shaanxi, China
Experimental modal analysis, dynamic modeling and structural parameter identification is put forward for researching in-plane vibration modal of heavy loaded radial tire with the larger flat ratio. Coupled characteristic of flexible tread, distributed sidewall element and rim is researched with experimental modal test, analysis and analytical resonant frequencies are analyzed considering coupled feature of flexible tread and distributed sidewall element. Tread is modeled as the Euler beam and the inertial force and sectional spring of tire sidewall is added when considering the relative movement of tread and rim. Modal expansion method is used for solving kinematic equations and analytic relationship between the resonant frequency and the structural parameters is derived. Structural parameters of the tire are identified by the genetic algorithm based on the experimental and analytical modal parameter of heavy-loaded tire and the higher order modal frequency is predicted with the analytic method.
Experimental and theoretical result shows that: (1) flexible tread vibrates in same direction with distributed sidewall within 180Hz, while vibrates in opposite direction with distributed sidewall within 180~300Hz; (2) modal analysis and kinetics modeling considering coupled feature of flexible tread, distributed sidewall element and rim can accurately characterize the in-plane vibration feature of heavy loaded tire within the frequency band of 300Hz, compared with the method which only considers flexible feature of tread limited to 180 Hz.
刘志浩1，高钦和1，刘准1，王旭1. 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[J]. 振动与冲击, 2018, 37(6): 28-.
LIU Zhihao1，GAO Qinhe1，LIU Zhun1， WANG Xu1. Kinematic dynamics Modeling, Modal Experiment and Parameters Identification of Heavy Loaded Radial Tire considering coupled feature of tread, sidewall and rim. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(6): 28-.
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