Modeling Vibration and Noise in a Gearbox
Application ID: 47841
Gearboxes transmit power between shafts and can generate vibration and radiated noise during operation. Gear contact can transmit unwanted lateral and axial forces to the bearings and housing, while the flexibility of components such as the gear meshes, bearings, and housing contributes to the vibration response. Predicting gearbox vibration and noise can provide useful insight early in the design process.
This tutorial illustrates the modeling of vibration and noise in a five-speed synchromesh gearbox for a manual transmission vehicle. A transient multibody analysis is performed to compute the gearbox vibration at a specified engine speed and external load. The normal acceleration of the gearbox housing is converted to the frequency domain and used as a noise source for an acoustics analysis. The resulting sound pressure levels are evaluated in the near, far, and exterior fields.
Learn more about this tutorial model in a related blog post: "How to Model Gearbox Vibration and Noise in COMSOL Multiphysics®".
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:
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 Specification Chart 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.
