This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Systems Approach to Eliminating Squeal in a Drum Brake
Technical Paper
2008-01-2531
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The traditional analysis of squeal noise for drum brakes is done in a separate approach, with CAE and laboratory/experimental techniques done independently or in a non-iterative sequential manner. In this paper, an innovative approach of directing the frequency response testing based on CAE is used and the overall process is embedded in a system approach. The drum brake design was changed to accomplish higher loads in a car. The initial results of the tests came out noise during the vehicle test. After retrieving the noisy parts from the vehicle, it was tested for frequency response, but in a directional manner suggested by the CAE model. This new approach hasn't been done before in industry practice. The CAE identified that two modes (around the noise frequency) swapped their orders compared to the old design and suggested design changes. The new design was evaluated with a mocked up prototype. This was followed by getting cast parts and testing them for frequency response. Eventually rig tests and vehicle tests followed, which proved that the new proposal fixed squeal problems.
Recommended Content
Authors
Topic
Citation
Ganguly, S., Tong, H., and Karpenko, Y., "A Systems Approach to Eliminating Squeal in a Drum Brake," SAE Technical Paper 2008-01-2531, 2008, https://doi.org/10.4271/2008-01-2531.Also In
References
- Hulten Johan Flint John Nellemose Thomas ‘Mode shape of a squealing drum brake’ SAE Paper no. 972028
- P221 Brake Squeal CAE Support March 2003
- CAE Analysis of Aviator Low Frequency Brake Squeal, LM CAE Rao Pandit Dziubinski Gabriela White Dale Tong Huanan Chen Shih-Emn Ford Global Noise and Vibration Conference October 2002
- Complex Eigenvalue Analysis Method for Brake Noise Prevention Chen Shih-Emn Tong Huanan Ford Technical Report May 2000
- Budinski K. G Engineering Materials- Properties and Selection Second Reston Publishing Co., Inc Reston, VA 1983
- Kung S.W. Stelzer G. Smith K. A. ‘A study on low frequency drum brake squeal’ SAE 2004-01-2787
- Krishnapur K. Luo Jim ‘Brake Squeal rig and LACT Vehicle Test correlation improvements- Focus on thermal conditionings’ SAE 2004-01-2791
- Ganguly S. Tong H. Dudley Greg Connolly Frank Hoff Stan ‘Eliminating drum brake squeal by a damped iron drum assembly’ SAE 2207-01-0952