Abstract
The rotating cylinder-friction block contact pair is a model of wearing joints such as drum brakes, contact seals and journal sliding bearings. In this paper the results of a theoretical and experimental study of a rotating cylinder-friction block, which is considered to be a contact pair with distributed parameters, are discussed. Differential equations which describe the dynamics of sliding, friction and wear are derived and numerical solutions are given. The friction block is assumed to be a rigid or an elastic body. Formulae for calculating the wear, friction torque and contact pressure distribution under constant load are proposed. The test apparatus and the results of the model experiments are presented. A pneumatic multichannel device for the measurement of contact pressure and its distribution in wearing joints is described. This device can be used in dry and boundary friction conditions under varying loads and velocities. The theoretical relationships are in good agreement with the experimental results.
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