Experimental and Numerical Modelling of Friction Induced Noise in Disc Brakes

2002-01-1192

03/04/2002

Event
SAE 2002 World Congress & Exhibition
Authors Abstract
Content
Friction-induced vibration is a serious problem in many industrial applications containing systems with rotating and/or sliding parts. Brake noise is a typical example. The critical element in the noise generation process is the combination of friction-induced loads with the dynamics of the braking system. In the present paper, a detailed experimental and numerical study of a specific low-frequency brake squeal problem is made on a simplified brake noise test rig.
First, the signal and spatial characteristics of the noise were analyzed by spectral and acoustic holography techniques. A parametric study of influence factors as brake pressure, rotation speed, etc. was made. Operational deformation analysis during squeal confirms the dominant modal behavior of the components, implying the critical role of the assembly structural dynamics.
Consequently, a detailed structural dynamics study (experimental modal analysis as well as finite element analysis) was made of the various brake system components. Furthermore, a multibody simulation model was developed for the assembly during braking, including a novel approach to model the contact between the moving and static components.
The simulation models allowed to explain the various observations of the experimental studies and provided new insights in the squeal generation mechanism and the importance of the various influence factors.
Meta TagsDetails
DOI
https://doi.org/10.4271/2002-01-1192
Pages
8
Citation
Hendricx, W., Garesci, F., Pezzutto, A., and Van der Auweraer, H., "Experimental and Numerical Modelling of Friction Induced Noise in Disc Brakes," SAE Technical Paper 2002-01-1192, 2002, https://doi.org/10.4271/2002-01-1192.
Additional Details
Publisher
Published
Mar 4, 2002
Product Code
2002-01-1192
Content Type
Technical Paper
Language
English