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Effect of Design Geometry on the Thermal Fatigue Strength of Brake Drum Made in Vermicular Cast Iron
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 21, 2006 by SAE International in United States
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Brake drums are components designed to dissipate kinetic energy of vehicles, converting it, mostly, into thermal energy. The stress state originated by thermal transients produced by braking cycles may nucleate fatigue cracks and lead the component to failure. The aim of this work is to analyze and compare thermal fatigue strength for brake drums, made in vermicular cast iron, with different design geometry. Firstly, fatigue life has been evaluated for the original geometry. The same analysis has been performed after reducing the thickness of the brake drum. From thermal and structural analisys, via finite element method, temperature evolution and loading history for the component have been obtained. The life of the component has been estimated for the region with the highest probability for crack nucleation by thermal fatigue. The rain-flow method of counting cycles has been applied and Goodman equation has been used to evaluate the fatigue life of the component. In the original drum geometry, the highest level of stress has been observed in radial direction, near the bolted flange. In the drum geometry with reduced thickness the highest level has occurred in axial direction, near the surface in contact with the shoes. The fatigue analysis has shown that the drum with reduced thickness presented higher thermal fatigue endurance than the original design.
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CitationAmorim, G., Villani, A., and Lopes, L., "Effect of Design Geometry on the Thermal Fatigue Strength of Brake Drum Made in Vermicular Cast Iron," SAE Technical Paper 2006-01-2526, 2006, https://doi.org/10.4271/2006-01-2526.
- Mackin, T.J. Noe, C.S. Ball, K.J. et al. Thermal Cracking in Disk Brakes Engineering Failure Analysis Illinois 9 2000 63 76
- Amorim, G.B. Rolim Lopes, L.C. et al. Thermal Fatigue Live Analysis of Brake Drums Made with Gray Cast Iron and Vermicular Cast Iron via FEM Simulation Paper presented to Society of Automotive Engineers Congress 2005
- Manual do Usuário de Tambores de Freio Tomé Siderúrgica Tomé Ltda 2002 5 26
- http://www.Suspensys.com.br December 2003
- Tipler, P. A. Physics for Scientists and Engineers 1 Freeman W. H. 1998
- Shigley, J.E. Mischke, C.R. Mechanical Engineering Design 6 McGraw-Hill International 2001 999 1007 1026 1027
- Ansys User's Manual for Revision 5.0 3 Swanson Analysis Systems Inc. 1994
- Revista Metalurgia e Materiais Associação Brasileira de Metalurgia e Materiais June 2002 396 397
- Revista Metalurgia e Materiais Associação Brasileira de Metalurgia e Materiais July 2004 369
- Metals Handbook American Society For Metals 2000 320 321
- Ashby, M.F. Materials Selection in Mechanical Design Pergamon Press 1992 48
- ASTM 1990 Annual Book of ASTM Standards Am. Soc. For testing and Materials Philadelphia “Cycle Counting in Fatigue Analysis” 03