Abstract
A mathematical analysis correlates the coefficient of friction and the wear rate in terms of pressure, velocity, area, temperature, and so forth, over discrete experimental data ranges. The basic equations of total torque, total radial force, total tangential friction force, and ideal pivot for block brakes and clutches having the coefficient of friction initially a function of normal pressure and relative rubbing velocity have been developed for dry or slightly lubricated surfaces. Three conditions are analysed: uniform wear having the coefficient of friction a function of pressure and velocity, uniform wear having the coefficient of friction a function of velocity and mean pressure, and uniform pressure having the coefficient of friction a function of velocity.
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