Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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METHOD OF CALCULATION OF WHEEL ROLLING RESISTANCE ON SNOWY ROAD WITH TAKING INTO ACCOUNT IRREGULARITY OF PRESSURE DISTRIBUTION IN THE CONTACT ZONE

Zezyulin D.V. 1 Makarov V.S. 1 Belyakov V.V. 1
1 Nizhny Novgorod State Technical University n.a. R.E.Alekseev
The article considers the rolling resistance force of wheel on the snow surface and the influence of the nature of the stress distribution in the contact zone on the resistance value. Experimental diagrams of normal pressure in contact zone of tires with the supporting surface for tires 1300х600-533 «TREKOL» and KI-115AM 12.00 R18 are shown. The methodology of account of the irregularity of the pressure distribution in the tire contact with the supporting surface when calculating the resistance force is given. Coefficients characterizing the irregularity of the pressure distribution for different types of tires were calculated and summarized in the table. Effect of the unevenness of the pressure distribution was analyzed.. Found that difference in the calculation of resistance for different height and density of the snow cover can range from 25 to 70%. The Investigations were carried out with the support of «The grants of the President of the Russian Federation» № 14.124.13.1869-MK «Development of a method of efficiency increasing of transport and technological vehicles in winter on the basis of experimental and theoretical researches»