Heat Generation in a Disc Brake
Application ID: 102
This example models the transient heating, and final temperature, of a disc brake of a car in brake-and-release sequence. It is important to model the transient heating and the following convective cooling to determine the minimum interval between a series of similar brake engagements. If the cooling is insufficient the disc overheats and results in brake failure.
The model uses the Heat Transfer interface in 3D and simulates the transient heat production, dissipation and transfer within the disc as it rotates slower and slower. The maximum temperature is reached after approximately 2/3 of the brake engagement time. The results show that the cooling time between similar brake engagements needs to be in the range of 100 seconds to achieve sufficient cooling.
This model example illustrates applications of this type that would nominally be built using the following products:Heat Transfer Module
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 Spezifikationstabelle 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.