BRAKE DISC HOT SPOTTING AND THERMAL JUDDER: AN EXPERIMENTAL AND FINITE ELEMENT STUDY

The paper covers the development and application of finite element techniques to thermo-mechanical instability in braking and brake disc hot judder. After a brief review of the phenomena of thermo-mechanical instability in braking and disc thermal judder, this paper describes and analyses experimental results of hot judder testing carried out on a dynamometer. Development of axisymmetric and 3D thermo-mechanical FE models capable of dealing with localised heat generation and wear is then described, with examples to illustrate their application to hot judder simulation. Through use of the 3D thermomechanical simulation together with the detailed analysis of experimental results, it is found that the out-of-phase thermoelastic 'buckling instability' is a significant factor causing hot spotting and hot judder. This new finding contributes to the fundamental understanding of the phenomena and widens the scope to improve the brake system performance in the relevant aspects. (A)

Availability:
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Corporate Authors:
Inderscience Enterprises Limited

World Trade Center Building, 110 Avenue Louis Casai
Geneva, Switzerland
Authors:
- KAO, T K
- RICHMOND, J W
Publication Date: 2000

Language

English

Media Info

Features: References;
Pagination: p. 276-96
Serial:
- International Journal of Vehicle Design
- Volume: 23
- Issue Number: 3/4
- Publisher: Inderscience Enterprises Limited
- ISSN: 1477-5360
- Serial URL: http://www.inderscience.com/jhome.php?jcode=IJVD

Subject/Index Terms

TRT Terms: Brakes; Braking; Finite element method; Heat; Vibration
ITRD Terms: 1361: Brake; 1874: Braking; 6490: Finite element method; 6743: Heat; 5558: Vibration
Subject Areas: Vehicles and Equipment;

Filing Info

Accession Number: 00793088
Record Type: Publication
Source Agency: Transport Research Laboratory
Files: ITRD
Created Date: May 31 2000 12:00AM