Boundary Layer Dynamics and Sound Generation TU Braunschweig

Format:

Conference/Event

Author/Creator:

Recke, Recke, author.

Contributor:

Ostermeyer, Georg

Conference Name:

Brake Colloquium & Exhibition - 36th Annual (2018-10-14 : Palm Desert, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2018

Summary:

AbstractIn recent years, characteristic structures in the boundary layer of high-load contacts such as brakes have been reported, which substantially influence the dynamics of the tribological contact.Usually, local assumptions concerning the friction behavior of these patches are used to reach global conclusions about the brake system. Several numerical methods (e.g. Cellular Automata) have been developed which employ such assumptions. The validation of these methods through measurement data tends to be laborious and costly.Sprag-Slip elements are friction elements that are exclusively subjected to static friction, never undergoing sliding friction. Implementing such elements on a mesoscopic scale, it is possible to generate global descriptions of macroscopic stick and slip friction phenomena. Locally, these Sprag-Slip elements are similar to the patch structures in the tribological boundary layer of brakes.The Sprag-Slip elements are suitable for describing the basic physics in the boundary layer between brake pad and rotor. Previous works have established their ability to depict principle macroscopic brake friction curves. In this paper, it is shown that characteristic boundary layer oscillations can represent characteristic braking behaviors, such as squealing and creep groan

Notes:

Vendor supplied data

Publisher Number:

2018-01-1900

Access Restriction:

Restricted for use by site license