Rui He, Corina Sandu, Mohit N. Shenvi, Hoda Mousavi, Justin Carrillo, Javier E. Osorio
Journal of Terramechanics, Volume 95, 2021, Pages 33-58, ISSN 0022-4898
https://doi.org/10.1016/j.jterra.2021.02.001.(https://www.sciencedirect.com/science/article/pii/S0022489821000136)
Abstract: Tire tractive performance, soil behavior under the traffic, and multi-pass effect are among the key topics in the research of vehicle off-road dynamics. As an extension of the study (He et al., 2019a), this paper documents the testing of a tire moving on soft soil in the traction mode or towing mode, with a single pass or multiple passes, and presents the testing results mainly from the aspects of tire tractive performance parameters, soil behavior parameters, and multi-pass effect on these parameters. The influence of tire inflation pressure, initial soil compaction, tire normal load, or the number of passes on the test data has been analyzed; for some of the tests, the analysis was completed statistically. A multi-pass effect phenomenon, different from any phenomenon recorded in the available existing literature, was discovered and related to the ripple formation and soil failure. The research results of this paper can be considered groundwork for tire off-road dynamics and the development of traction controllers for vehicles on soft soil.
Keywords: Terramechanics; Tractive performance; Tire test; Soil compaction; Multi-pass effect; Tire inflation pressure; Rolling resistance; Tire off-road dynamics; Rolling radius