Deceleration factors on off-road surfaces applicable for accident reconstruction.

Author(s)
Christoffersen, S.R. Jarzombek, M.J. Wallingford, J.G. Greenlees, W. & Minihan, T.P.
Year
Abstract

This paper presents the results of full scale 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 experiment data is made with respect to the theoretical prediction of deceleration being trigonometrically related to slip angle. Results indicate the theoretical pre dictionas fairly approximate through a portion of the side slip range. As side slip angles approach 90 degrees, actual measured values are higher than predicted. (A)

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Publication

Library number
C 5765 (In: C 5757) /80 /82 / IRRD 882398
Source

In: Accident reconstruction : technology and animation V : papers presented at the International Congress and Exposition, Detroit, Michigan, February 27 - March 2, 1995, SAE technical paper 950139, p. 99-114, 10 ref.

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