ANALYSIS OF METHODS FOR DETERMINING THE COEFFICIENT OF ADHESION BETWEEN THE WHEEL AND THE RAIL, WHICH AFFECTS THE TORSIONAL VIBRATIONS IN THE TRACTION OF MAINLINE LOCOMOTIVES

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ANALYSIS OF METHODS FOR DETERMINING THE COEFFICIENT OF ADHESION BETWEEN THE WHEEL AND THE RAIL, WHICH AFFECTS THE TORSIONAL VIBRATIONS IN THE TRACTION OF MAINLINE LOCOMOTIVES

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This article emphasizes the importance of efficient movement of rolling stock and the coefficient of friction between wheels and rails when using them. The factors influencing the friction of the wheel against the rails are considered. The spots formed under the action of vertical forces on the contact surfaces of wheels and rails were revealed. Contact spots and fiber shear were detected under the action of torque. The intermolecular forces of the fibers resist shear, resulting in shear stresses. These stresses, in turn, create a traction force applied to the wheel contact point and forces transmitted in the opposite direction. The analysis of dry friction, sliding friction and static friction in the contact zone is considered. Studies have shown that in order to increase the value of the adhesion coefficient, it is necessary to increase the contact surface area, increase the wheel diameter, the radius of the rail head surface, create a special tire profile, increase the tensile strength of wheel tires and rails, based on the fact that it can be achieved by preparing from existing materials. Was carried out according to the coefficient of adhesion. V.Ya. Naumov, N. N Menshutin, A. A Rengevich and the experiments carried out by the O. M Yansons were studied. As a result of these studies, the dependence of the coefficient of adhesion of the wheel to the rails on the speed of movement was considered. Accordingly, it has been found that the traction coefficient decreases with increasing speed

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# wear# Rails# wheelset# coefficient of adhesion# bandage

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https://eroi.uz/11.0008/A0922-0037

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Foydalanilgan adabiyotlar

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