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Bending fatigue behaviour of bearing ropes working around pulleys of different materials
Affiliation:1. College of Traffic & Transportation, Chongqing Jiaotong University, Chongqing 400074, China;2. The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China;1. School of Mechanical and Electrical Engineering, China University of Mining and Technology, Jiangsu Province, Xuzhou 221116, China;2. Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment, China University of Mining &Technology, Jiangsu Province, Xuzhou 221116, China;3. Jiangsu Collaborative Innovation Center of Intelligent Mining Equipment, Xuzhou, China;4. College of Mechanical Engineering, Chongqing University, Chongqing 400044, China;5. Citic Heavy Industries Co. Ltd, Luoyang, China;6. Luoyang Mining Machinery Engineering Design Institute Co. Ltd, Luoyang, China;7. State Key Laboratory of Mining Heavy Equipment, CITIC HIC, Luoyang, China;1. Faculty of Mining, Ecology, Process Control and Geotechnology, Technical University of Košice, Park Komenského 14, 042 00 Košice, Slovak Republic;2. Tatry Mountain Resort, a.s. Demänovská dolina 72, 031 01 Liptovský Mikuláš, Slovak Republic
Abstract:Nondestructive quantitative detection and artificial detection were carried out to study bending fatigue behaviour and failure mechanisms of wire ropes. When working around nylon pulleys, wire ropes exhibit a slowly increasing of fracture rate and total damage in one lay length. The bending fatigue life of wire ropes is twice longer than that of ropes working around steel pulleys. The primary failure mode of wire ropes working around nylon pulleys is fatigue fracture and the fracture surfaces of wires exhibit a wide crack propagation zone and narrow tear zone.
Keywords:Wire rope  Pulley material  Bending fatigue  Fatigue life  Damage mechanisms
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