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:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
- COMSOL Multiphysics® and
- Acoustics Module and
- CAD Import Module and
- Multibody Dynamics Module and
- Rotordynamics Module
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Tabela de Especificações and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.