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Effect of Initial Residual Stress on Crack Initiation from Tiny Holes of Brake Discs for Motorcycles
Technical Paper
2007-01-3952
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
25th Annual Brake Colloquium
Language:
English
Abstract
The purpose of this study is to clarify how the residual stress determined by the configuration of weight reduction holes affects the crack initiation in the brake discs for large motorcycles under the over loading condition. Two kinds of test samples of the one-piece type brake disc were used where the configuration of the weight reduction holes were different. The test result showed that the crack initiation life was significantly changed due to the configuration of weight reduction holes. The 3D FEM results of heat transfer and thermal stress analysis explained that the stress relaxation was dependent on the configuration of weight reduction holes of the disc because the initial thermal stress was directly determined by the simple stress distribution around each hole. This study confirmed that the configuration of weight reduction holes plays a decisive role in determining the design of the brake disc.
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Authors
Citation
Koyama, Y., Okubo, K., Fujii, T., and Nakatsuji, T., "Effect of Initial Residual Stress on Crack Initiation from Tiny Holes of Brake Discs for Motorcycles," SAE Technical Paper 2007-01-3952, 2007, https://doi.org/10.4271/2007-01-3952.Also In
SAE 2007 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V116-6; Published: 2008-08-15
Number: V116-6; Published: 2008-08-15
References
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