Abstract
Theoretical modeling, parameters identification and vibration characteristic of heavy-loaded radial tire is investigated with rigid-elastic coupling model with normal damping. The normal damping, including structural damping of flexible carcass and proportion damping of distributed sidewall element is added to enrich the flexible beam on modified elastic foundation tire model. The rigid-elastic coupling tire model with normal damping is investigated and derived with finite difference method. The mass, stiffness and damping matrixes of the proposed tire model are analytically related with the structural and geometrical parameters of heavy-loaded radial tire. Taking the error between the analytical and experimental transfer function as the object value, Genetic Algorithm (GA) is utilized to identify the damping coefficients of flexible carcass and distributed sidewall element. The influence of modal order and tire damping parameters on the in-plane transfer function is discussed. The theoretical and experimental results show that the rigid-elastic coupling tire model with normal damping can achieve the sectional feature of in-plane transfer function resulting from the coupling characteristic between the flexible carcass and distributed sidewall element within the frequency band of 300 Hz.
Highlights
In recent years, the maneuver stability [1], smoothness [2] and braking safety [3] of the heavy-loaded vehicles have become being of vital importance in the automotive community, especially the speed is exceeding towards higher
The rigid-elastic coupling tire model with the modified elastic foundation is proposed and derived based on the flexible beam on modified elastic foundation tire model [9] and the in-plane normal damping of the heavy-loaded radial tire, including structural damping of flexible carcass and proportion damping of distributed sidewall element is modeled
In-plane tire model is based on the flexible beam on modified elastic foundation tire model and consists with three critical sections (Fig. 1): (1) Flexible carcass is simulated with Euler beam and the axis force of the Euler beam [13] is considered resulting from the inflation pressure; (2) Circumferential distributed sidewall segment refers as the radial spring with two-sectional spring force and the inertia force; (3) Normal damping, including the structural damping of flexible carcass and the proportion damping of sidewall radial spring, is added to enrich the rigid-elastic coupling tire model
Summary
The maneuver stability [1], smoothness [2] and braking safety [3] of the heavy-loaded vehicles have become being of vital importance in the automotive community, especially the speed is exceeding towards higher. IN-PLANE VIBRATION ANALYSIS OF HEAVY-LOADED RADIAL TIRE UTILIZING THE RIGID-ELASTIC COUPLING TIRE MODEL WITH NORMAL DAMPING. The rigid-elastic coupling tire model with the modified elastic foundation is proposed and derived based on the flexible beam on modified elastic foundation tire model [9] and the in-plane normal damping of the heavy-loaded radial tire, including structural damping of flexible carcass and proportion damping of distributed sidewall element is modeled.
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