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Magneto-Rheological Fluid Semiactive Suspension System Performance Testing on a Stryker Vehicle
Technical Paper
2006-01-1379
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A Magneto-Rheological (MR) Fluid Semiactive Suspension System was tested on a Stryker vehicle, Infantry Carrier Variant (ICV), to determine the performance improvements compared to a standard ICV Stryker vehicle. In January 2005, the testing was conducted at the U.S. Army Yuma Proving Grounds located in Yuma, Arizona. The testing was conducted under the guidance of the U.S. Army Tank-Automotive Research, Development, and Engineering Center (TARDEC) of Warren, Michigan and MillenWorks of Tustin, California. The core of the system tested is comprised of 8 dampers and controllers using proprietary algorithms to modulate individual wheel forces in response to terrain inputs and body motion. Functionality of the Standard Stryker vehicle’s pressurized gas spring and ride height management system was fully retained while maintaining the physical envelope of the original damper. The systems low power consumption (80 watts idle, estimated 250 watts cross-country, and 800 watts theoretical peak) did not require an additional power source. The MR Suspension system was intentionally designed to maintain the standard wheel travel, spring rate, and spring gas volume.
Over a range of off-road bump courses, the MR Stryker’s best performance was a 72% increase in the vehicle’s speed, from 22 mph (standard vehicle) to 38 mph at the 6-watt level of driver absorbed power (a measure of transmitted vibration). The system also showed marked improvements during aggressive on-road maneuvers like lane changes. The rate of vehicle roll was reduced by 30%. The maximum lane change speed increased from 38 mph (standard vehicle) to over 50 mph with the MR system.
This suspension technology is a cost effective, bolt-on system that has increased cross-country speeds, improved ride quality, and helped with platform stability thereby increasing battlefield effectiveness, safety levels for the operator and crew, and reducing potential for vehicle damage and associated maintenance activities. Its relatively simple design and cost effectiveness allows insertion of this technology into new vehicle designs, both wheel and track, as well as the potential for spiral upgrades with existing vehicles.
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Citation
Wray, A., Jimenez, A., Anderfaas, E., Hopkins, B. et al., "Magneto-Rheological Fluid Semiactive Suspension System Performance Testing on a Stryker Vehicle," SAE Technical Paper 2006-01-1379, 2006, https://doi.org/10.4271/2006-01-1379.Also In
References
- Hoogterp, F.B. Saxon, N.L. Schihl, P.J. “Semiactive Suspension for Military Vehicles,” SAE Technical Paper No. 930847 March 1993
- Hoogterp, F.B. “Active suspension technology for combat vehicles,” Technologies for Advanced Land Combat CR59 25 48 SPIE Press April 1995
- Saxon, N.L. Meldrum, W.R. Bonte, T.K. “Semiactive Suspension: A Field Testing Case Study,” SAE Technical Paper No. 98PC-205 March 1998
- “Electrorheology for Smart Automotive Suspensions,” The University of Michigan Transportation Research Institute Ann Arbor, MI June 1994
- Carlson, J.D. “Controlling Vibration with Magnetorheological Fluid Damping,” Sensors Magazine Feb. 2002
- “Magnetically responsive fluid is key to a simple, compact semi-active suspension,” Design News January 21 2002
- Lee, R.A. Pradko, F. “Analytical Analysis of Human Vibration” SAE Paper No. 680091 1968
- Lins, W.F. “Human Vibration Response Measurement” U.S. Army Tank Automotive Command Warren, MI 1972
- Pradko, F. Lee, R.A. Greene, J.D. “Human Vibration-Response Theory” ASME Paper No. 65-WA/HUF-19 1965
- Pradko, F. Lee, R. Kaluza, V. “Theory of Human Vibration Response” ASME Paper No. 66-WA/BHF-15 1966
- Kleiber, J. “Stryker Magneto-Rheological Suspension Test” U.S. Army Yuma Yuma, AZ 2005