Abstract
Tyre vibration represents the main source to generate the noise for light vehicles. The physical aspects which are involved in studying tyre noise are tyre vibrations and structure borne sound. In this paper, radial tyre displacements have been investigated for tyre vibration characterization in natural frequency. A cylindrical shell model has been used to analyse flexural wave’s propagation. Two important features of flexural wave propagation on a cylindrical shell were analysed, lower order modes of the second and third radial mode sets are in the range where the membrane effects in sidewall are relatively large. The tread band and sidewall responses of the tyre have been simulated and compared. As a result, the concentration of displacements has been observed in the vicinity of tyre structure. For the simulation purposes, frequency analysis has been performed, showing the influence of the rotating speed on the vibrations level and natural frequency content. The study gives a physical insight on generation mechanism of tyre radial vibrations.
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