Highlights Magic Formula (MF) was extended for large inflation pressure changes. MF parameterization by genetic algorithm was compared with that by geometric feature. A bulk density estimation model was parameterized by the data from soil tests. An adapted Bekker’s model parameterization was done by the data from tire-soil tests.
Abstract The parameterization of terramechanics model for the tire off-road traction dynamics modeling relies exclusively on the plate-sinkage test and shear test (not using a tire as the shear tool), according to the existing literature. However, the plate-soil interaction cannot be considered the same as the tire-soil interaction (Plackett, 1985). Part II of this paper investigates whether the tire-soil test can be used to parameterize terramechanics model. The parameterization of the modified Bekker’s model, the Magic Formula tire model, and a bulk density estimation model, using the data from the series of tire and soil tests presented in Part I of this paper (He et al., 2019), is discussed in detail herein. The parameterization approach presented herein can be used to develop tire off-road dynamics models.
Systematic tests for study of tire tractive performance on soft soil: Part II – Parameterization of terramechanics model and tire model
Journal of Terramechanics ; 85 ; 77-88
2019-07-29
12 pages
Article (Journal)
Electronic Resource
English
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