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- Title
Preventing Disc Brake Squeal using a Thin Plate Shim.
- Authors
Zainudin, Muhammad Amir; Abu Bakar, Abd Rahim
- Abstract
Squealing from car disc brakes is a source of considerable discomfort and leads to customer dissatisfaction. The high frequency squeal noise above 1 kHz is very annoying and difficult to eliminate. Good braking performance against noise is considered to be a big market advantage. Reduction of brake squeal in the design stage is a formidable challenge that is faced by the automotive engineers. This paper attempts to provide a solution of eliminating disc brake squeal up to 10 kHz using a thin plate shim. First, squeal occurrences in a disc brake assembly without thin plate shim are investigated for various operating conditions using a drag-type brake dynamometer. Having identified the dominant squeal frequencies, several shapes of thin plate shim are proposed and tested. The aim of using thin plate shims is to modify contact pressure distribution on the brake pads. A good shim should be able to effectively suppress and prevent those squeal frequencies generated in a disc brake system.
- Subjects
DISC brakes for automobiles; AUTOMOBILE brakes; DISC brakes; AUTOMOBILE engineers; DYNAMOMETER
- Publication
International Journal of Vehicle Structures & Systems (IJVSS), 2012, Vol 4, Issue 1, p23
- ISSN
0975-3060
- Publication type
Article
- DOI
10.4273/ijvss.4.1.04