Eliminating Drum Brake Squeal by a Damped Iron Drum Assembly 2007-01-0592
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.
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. Download Citation
Author(s):
Shane Ganguly, Huanan Tong, Greg Dudley, Frank Connolly, Stan Hoff
Affiliated:
Ford Motor Company, TRW Chassis System
Pages: 11
Event:
SAE World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Brake Technology 2007-SP-2070
Related Topics:
Assembling
Test facilities
Casting
Noise
Metallurgy
Iron
CAD, CAM, and CAE
Fatigue
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