Military vehicles have been experiencing high rollover rates over the last few years of deployment. There have been several hundred rollovers, of which approximately fifty percent are categorized as fall based. Fall based rollover occurs when the road gives way underneath the vehicle on one side as the soil is unable to support the vehicle load. To reduce fatalities, a real-time driving simulator can be used to simulate fall-based rollover for the driver training as well as for validating the effectiveness of advanced suspension technologies. The driver training can help prepare drivers with the varying degrees of terrain difficulties, by applying optimal steering and speed strategies in a simulated environment. The fall-based rollover occurs mainly due to combination of the tire sinkage and the lateral bulldozing. In the current research, equations for the tire-soil model are developed based on the Bekker’s equations and Mohr-Coulomb equations that compute the tire sinkage into the soil, the lateral and longitudinal forces from the soil deformation, rolling resistance due to the soil compaction, and the lateral plowing effects. The tire-soil model is incorporated into a commercial real-time multi-body code to simulate fall-based rollovers for various slopes and soil conditions. Results indicate rollover propensity changes depending the type of soil and the steering strategy used.
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ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 17–20, 2014
Buffalo, New York, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-4634-6
PROCEEDINGS PAPER
Tire-Soil Modeling for Vehicle Rollover Over Sloped Compressible Terrains
Dale Holtz,
Dale Holtz
Realtime Technoglogies, Inc., Royal Oak, MI
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Amandeep Singh,
Amandeep Singh
US Army RDECOM-TARDEC, Warren, MI
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Michael G. Megiveron
Michael G. Megiveron
US Army RDECOM-TARDEC, Warren, MI
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Dale Holtz
Realtime Technoglogies, Inc., Royal Oak, MI
Amandeep Singh
US Army RDECOM-TARDEC, Warren, MI
Michael G. Megiveron
US Army RDECOM-TARDEC, Warren, MI
Paper No:
DETC2014-35662, V003T01A029; 8 pages
Published Online:
January 13, 2015
Citation
Holtz, D, Singh, A, & Megiveron, MG. "Tire-Soil Modeling for Vehicle Rollover Over Sloped Compressible Terrains." Proceedings of the ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 3: 16th International Conference on Advanced Vehicle Technologies; 11th International Conference on Design Education; 7th Frontiers in Biomedical Devices. Buffalo, New York, USA. August 17–20, 2014. V003T01A029. ASME. https://doi.org/10.1115/DETC2014-35662
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