Determining the nature of the load distribution on the supporting surface to identify the required contact area of the wheel propulsion unit

The purpose of this article is to determine the nature of the load distribution on the supporting surface in order to identify the required contact area of the wheel propulsion unit when overcoming rolling resistance, which is necessary for the design of a new propulsion unit for 4-wheeled domestic tractors. The authors uses methods for theoretically determining the settlement of a platform that transmits pressure to the ground, along with correlation analysis of parameters for tires of various types; a fuzzy model is adopted to determine the universal dependence of the contact area on the normal load on the wheel and the internal pressure in the tire using the theory of fuzzy sets. The object of the study is the propulsion unit of a 4-wheeled domestic tractor. At low loads and deformations, when the curve of the relationship between loads on the soil and the settlement of the stamp has a relatively small curvature and differs little from a straight line, it is assumed that the laws of the theory of elasticity are applicable to the soil.

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