Modeling Vibration and Noise in a Gearbox: CMS Version

Application ID: 103211

This example illustrates the modeling of vibration and noise in a 5-speed synchromesh gearbox of a manual transmission vehicle. A transient multibody analysis is performed to compute the gearbox vibration for the specified engine speed and external load. The normal acceleration of the gearbox housing is converted to the frequency domain and used as a source of noise. An acoustics analysis is then performed in order to compute the sound pressure levels in the near, far, and exterior fields.

This example is essentially the same as Modeling Vibration and Noise in a Gearbox, but with the flexible gearbox housing reduced to a computationally efficient reduced-order model (ROM) using the Component Mode Synthesis (CMS) technique.

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