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A New Method for Vehicle-Terrain Interaction Research
Technical Paper
2005-01-0940
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents a new method for off-road traction and mobility research. This is an experimental method, in which traction measures (drawbar pull, rolling resistance, and vertical load) are correlated with respective stresses in soil, generated under a vehicle's load: major stress S1, shear, and normal stresses in the octahedral stress system. A theoretical background for the proposed method lies in Bekker's traction equations, where tractive forces are correlated with stresses on a contact surface between a wheel and terrain. Substituting surface stresses with volume stresses is expected to result in a more precise description of wheel-soil interactions. The soil stress - tractive forces relationships were obtained in real-size field tests using wheeled and tracked vehicles, driven on sand, loess, and turf. Traction and soil stresses were measured simultaneously with the use of original measuring methods, which are described in the paper.
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Authors
Citation
Pytka, J., "A New Method for Vehicle-Terrain Interaction Research," SAE Technical Paper 2005-01-0940, 2005, https://doi.org/10.4271/2005-01-0940.Also In
References
- Bekker G. Introduction to Terrain-Vehicle Systems Ann Arbor Michigan Press 1969
- Shoop S.A. Young B. Alger R. Davis J. Effect of test method on winter traction measurements J.of Terramechanics 31 3 1994 153 161
- Pytka J. DÄ…browski J. Determination of the stress-strain relationship for sandy soil in field experiments J.of Terramechanics 38 2001 185 200
- Pytka J. Konstankiewicz K. A new optical method for soil stress and strain investigations Soil&Tillage Research 65 2002 243 251