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Abstract
Large-sized non-asbestos brake pad is used in the brake system of mine hoister. During the braking process, uneven contact force distribution in the contact surface will occur, which accordingly le...
Highlights
Mine hoister is used to transfer materials or people between the bottom of the mine and ground
In the temperature range from ambient temperature to 500°C, Kim et al.[2] measured the thermal diffusivity, the specific heat, and the coefficient of thermal expansion of three kinds of iron alloy series friction materials and two kinds of aluminum alloy series friction materials used for the brake system, and the thermal conductivity was calculated based on the measured thermophysical properties
Since the non-asbestos brake pad will degrade when the temperature is higher than 300°C, the initial speed v0 should not be higher than 10 m/s when the nominal normal pressure is equal to 0.6 MPa
Summary
Mine hoister is used to transfer materials or people between the bottom of the mine and ground. Being used to stop a mine hoister or control its speed, disk brake plays an important role in ensuring the safety operation. Braking performance of the disk brake has been all along a research hotspot. A lot of research has been carried out on tribology characteristics of the disk brake, but most of them are focused on the disk brake used in vehicles. Dmitriev et al.[1] established a model to study the contact characteristics of friction materials for automotive brakes and analyzed the braking processes of local contacts in an automotive brake system. In order to investigate the hot judder phenomenon of the disk brake system, Jung et al.[3] took the ventilated diskdisk pads, and pistons as the research objects, established three-dimensional (3D) finite
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