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Development and Testing of Lightweight Aluminum Composite Brake for Medium to Heavy Duty Vehicles
Technical Paper
2010-01-1705
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The objective of this paper is to highlight the design, analysis, testing, and application engineering performed to develop a lightweight brake drum made of aluminum metal matrix composite (MMC). Current cast iron brake drums are “design-limited” in the sense that new designs do not significantly change performance and they offer minimal weights savings. This paper will begin with the design of the drum with respect to SAE requirements, and then show how the drum was optimized using finite element analysis (FEA). FEA was used to predict maximum drum temperatures and stress levels reached during various braking events. There were a number of design iterations that led to the current design that has been extensively tested on the dynamometer and on a vehicle. In addition to test performance, the casting and infiltration challenges led to significant design changes. Finally, this paper will present dynamometer and vehicle test data with direct comparisons to cast iron drums, especially related to the concerns with fade, torque and temperature. The engineering effort, coupled with the testing success, demonstrate that this lightweight brake drum product brings a significant weight reduction benefit while fulfilling market drivers - stopping distances, emission reductions, rising fuel prices, and growing weight of military vehicles. Prior attempts to make heavy truck drums involved making the drums of 100% MMC reinforcement, and were unsuccessful. The selective MMC reinforcement method is used here, and has demonstrated a new level of success.
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Authors
Citation
Kero, M. and Halonen, A., "Development and Testing of Lightweight Aluminum Composite Brake for Medium to Heavy Duty Vehicles," SAE Technical Paper 2010-01-1705, 2010, https://doi.org/10.4271/2010-01-1705.Also In
References
- Buckman, Leonard “Commercial Vehicle Braking Systems: Air Brakes, ABS and Beyond” SAE International SP-1405
- Federal Register: Rules and Regulations 75 60 March 30 2010
- Buckman, Leonard “Commercial Vehicle Braking Systems: Air Brakes, ABS and Beyond” SAE International SP-1405
- Kainer, Karl “Metal Matrix Composites” Wiley-VCH 2006 1
- Duralcan MMC Brochure. Alcan www.ingot.alcan.com
- www.Matweb.com
- Kainer, Karl “Metal Matrix Composites” Wiley-VCH 2006 8
- www.diecasting.org/faq
- International Test Report “Dynamometer Report No 6007-3” Rockwell International December 1990
- Internal Test Report Number 4551-2 Rockwell International August 1986
- Dynamometer Test Report 7560-2 Rockwell International October 1996
- Buckman, Leonard “Commercial Vehicle Braking Systems: Air Brakes, ABS and Beyond” SAE International SP-1405 50 54 64