Deceleration Factors on Off-Road Surfaces Applicable for Accident Reconstruction 950139
This paper presents the results of full scale vehicle testing completed to examine deceleration factors, or friction coefficients, on various off-road and on-road surfaces. Of particular interest is the relationship between vehicle side slip and deceleration rates on soft, off-road, deformable soils. Vehicle testing was conducted at slip angles of 0, 30, 45, 60, and 90 degrees with locked and unlocked wheels. A comparison of the experimental data is made with respect to the theoretical prediction of deceleration being trigonometrically related to slip angle. Results indicate the theoretical prediction as fairly approximate through a portion of the side slip range. As side slip angles approach 90 degrees, actual measured values are higher than predicted.
Citation: Christoffersen, S., Jarzombek, M., Wallingford, J., Greenlees, W. et al., "Deceleration Factors on Off-Road Surfaces Applicable for Accident Reconstruction," SAE Technical Paper 950139, 1995, https://doi.org/10.4271/950139. Download Citation
Steven R. Christoffersen, Marlan J. Jarzombek, Jerry G. Wallingford, William Greenlees, Thomas P. Minihan
International Congress & Exposition
Accident Reconstruction: Technology and Animation V-SP-1083