This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Measured Rolling Resistance of Vehicles for Accident Reconstruction
Annotation ability available
Sector:
Language:
English
Abstract
Knowledge about vehicle rolling resistance is required to calculate speed loss of accident vehicles during portions of their pre-impact and post-impact trajectory when they are not braking or sliding directly sideways. The accuracy of assumed rolling resistance values is most important in accidents with long post-impact roll out distances. Very little hard data are currently available1 and the accident reconstructionist must usually make estimates of drivetrain losses and normal and damaged tire rolling resistance to determine overall vehicle rolling resistance.
In the first part of this study, the rolling resistances of various vehicles with different drive configurations are determined, based on accurate measurements made with a 5th wheel. In the second part, sensitivity analyses are done with PC-Crash2, a computer simulation program, to determine what effect the error in assumed rolling resistance has on speed calculations for various types of post-impact trajectories.
Recommended Content
Technical Paper | Lane Change Maneuver Modeling for Accident Reconstruction Applications |
Technical Paper | An Analytical Assessment of the Critical Speed Formula |
Technical Paper | Vehicle Crash Severity Assessment in Lateral Pole Impacts |
Authors
Citation
Cliff, W. and Bowler, J., "The Measured Rolling Resistance of Vehicles for Accident Reconstruction," SAE Technical Paper 980368, 1998, https://doi.org/10.4271/980368.Also In
References
- Warner, Charles Y. et al “Friction Applications in Accident Reconstruction” SAE 830612
- Steffan, Hermann Moser, Andreas “The Collision and Trajectory Models of PC-CRASH” SAE 960886
- SLAM, An accident reconstruction program based on original work NHTSA CRASH III
- EDSMAC, An accident simulation/trajectory program based on original work NHTSA
- Descornet, G “Road-Surface Influence on Tire Rolling Resistance” 1990
- Robinette, R Deering, D Fay R “Drag and Steering Effects of Under Inflated and Deflated Tires”
- Gardner J.D. Shapley, C.G. “The Role of Blowouts in Accident Causation” Proceedings of the ASME Winter Annual Meeting 1987
- HILO tests - Complete details of these August 1997 tests performed at a conference in Vancouver British Columbia Bailey Mark November 1997
- Jones, I.S. Baum, A.S. “Research Input for Computer Simulation of Automobile Collisions, Volume IV. Staged Collision Reconstructions” December 1976
- Smith, R.A. Noga, J.T. “Examples of Staged Collisions in Accident Reconstruction” Proceedings of the ASME Winter Annual Meeting 1980
- Cliff, W.E. Montgomery, D.T. “Validation of PC-Crash - A Momentum-Based Accident Reconstruction Program” SAE 960885