Highlights Smoothed-Particle Hydrodynamics technique for soil modelling. Finite Element Analysis for tire modelling. Moist soil modelling using two-phase interaction and water pressurization. Calibration of soil by pressure-sinkage and shear-strength tests. Effect of moisture on shear, sinkage characteristics and tire cornering stiffness.
Abstract This paper focuses on predicting and analyzing the tire-moist terrain interaction. The moist terrain (sand) is modelled using Smoothed-Particle Hydrodynamics (SPH) technique. The SPH basic interpolation technique is described, and the necessary interpolation equations are implemented. The soil is modelled using the hydrodynamic elastic-plastic material, while the water is modelled using Murnaghan equation of state. The numerical interaction between both materials is defined using Darcy’s law. The soil moisturizing technique consists of layering water particles on top of sand particles and pressurizing the water into the sand. The moisturizing technique is examined using the direct shear-strength test, and validated against physical measurement carried out in a laboratory under similar soil conditions and bulk density. Finally, the results and the effect of moisture content on tire-moist terrain interaction are discussed and investigated using a previously modelled and validated off-road truck tire size 315/80R22.5.
Modelling tire-moist terrain interaction using advanced computational techniques
Journal of Terramechanics ; 91 ; 23-30
2020-04-10
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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