Abstract
Abnormal vibration of a vehicle rear axle was detected during bench test. 3D model and finite element model of the rear axle were built and the vibration modes were computed. It was found that the frequency of abnormal vibration in the bench test just matched the frequency of the first bending mode of the rear axle assembly. Therefore it can be concluded that the resonance of rear axle assembly result in the abnormal vibration and some measures are necessary, such as strengthening the half-axle sleeve or installing vibration absorber
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