1997-02-24

Modal Analysis of Tire In-Plane Vibration 971101

The paper presents experimental modal analysis of a non-rotating tire for two boundary conditions. The tire is excited by a hammer and the responses are measured in tangential and radial direction with accelerometers Mode shapes and frequencies are assessed from the measured frequency response functions. These experimental results are compared with the modes of a theoretical tire ring model, where tire is modeled as a circular beam that is able to deform in radial and tangential direction. The partial differential equation of the tire ring model is solved using the modal expansion method resulting in a modal description of the free tire vibration. The parameters of the model are established from the measured frequencies of the free tire.

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