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A thermal, thermoelastic, and wear analysis of high-energy disk brakes

Author
Kennedy, F. E., Jr.
Published
Jan 1, 1974.
Physical Description
1 electronic document
Additional Creators
Wu, J. J. and Ling, F. F.
Online Version

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Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
A thermomechanical investigation of the sliding contact problem encountered in high-energy disk brakes is described. The analysis includes a modelling, using the finite element method of the thermoelastic instabilities that cause transient changes in contact area to occur on the friction surface. In order to include the effect of wear at the contact surface, a wear criterion is proposed that results in the prediction of wear rates for disk brakes that are quite close to experimentally determined wear rates. The thermal analysis shows that the transient temperature distribution in a disk brake assembly can be determined more accurately by use of this thermomechanical analysis than by a more conventional analysis that assumes constant contact conditions. It also shows that lower, more desirable, temperatures in disk brakes can be attained by increasing the volume, the thermal conductivity, and, especially, the heat capacity of the brake components.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19740010212.
Accession ID: 74N18325.
NASA-CR-134507.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15745605