Eliminating Drum Brake Squeal by a Damped Iron Drum Assembly

2007-01-0592

04/16/2007

Event
SAE World Congress & Exhibition
Authors Abstract
Content
Control of drum brake squeal is difficult to accomplish. After many trials guided by CAE and previous experience, for a passenger car it was felt that changing the metallurgical characteristics of the drum would lead to improved noise performance. The chemistry of the drum casting material was altered. The carbon equivalent was modified by increasing carbon and silicon content of the castings as well as changing the other materials. The integral hub and drum assembly was tested on two different dynamometers. The results were also verified by finite element complex eigenvalue analysis. Finally the solution was validated through vehicle level testing - Los Angeles City Traffic (LACT). For the structural consideration rotary fatigue was evaluated by CAE comparison followed by test rig confirmation. The higher carbon equivalent material drums successfully eliminated the annoying squeal in customer vehicles.
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DOI
https://doi.org/10.4271/2007-01-0592
Pages
11
Citation
Ganguly, S., Tong, H., Dudley, G., Connolly, F. et al., "Eliminating Drum Brake Squeal by a Damped Iron Drum Assembly," SAE Technical Paper 2007-01-0592, 2007, https://doi.org/10.4271/2007-01-0592.
Additional Details
Publisher
Published
Apr 16, 2007
Product Code
2007-01-0592
Content Type
Technical Paper
Language
English