Numerical simulation of lining's transient temperature field during sliding of friction hoist's sliding

Based on the friction drive equation between the lining and wire rope, the characteristic of sliding process of friction hoist and the theory of heat conduction, a model of lining's transient temperature field was established and its analytic solution was obtained by an integral-transform method. According to the two sliding conditions of overloading hoist, the lining's temperature field was simulated. The results show that the lining's temperature increased with the increasing of wrap angle, and sharply increased with the increasing of relative sliding speed when the drum is static. The temperature of lining also increased when the drum is rotational, but it was lower than that when static, and delayed to increase at smaller wrap angle. The frictional heat energy was concentrated on the thermal effect layer (TEL) with the thickness of 4 mm. The temperature gradient of contact surface is the highest, and decreased rapidly with the radius direction of the lining's groove. The temperature gradient and TEL's thickness increased with the increasing of the sliding speed. The temperature decreased rapidly with the radius direction and also with the increasing of center angle of the lining's groove. The sliding speed and distance are obtained under two sliding conditions when the lining fails, which supply the theoretical basis with the antislip design of friction hoist.