Modeling Vibration and Noise in a Gearbox: Bearing Version

Application ID: 90271

This example is an extension of a model used to study the vibration and noise in a 5-speed synchromesh gearbox in a manual transmission vehicle. In this version of the model, a detailed representation of a roller bearing is used instead of hinge joints with elastic stiffness. First, the gearbox vibration is computed using a time dependent analysis for the specified engine speed and external load. A frequency domain representation of the normal acceleration of the gearbox housing is then computed to be used as a noise source. Finally, an acoustic analysis is performed to obtain the sound pressure levels in the near, far, and exterior fields.

This model example illustrates applications of this type that would nominally be built using the following products: