Failure Analysis and Finite Element Simulation of Wire Rope Fracture in Coal Mine Hoisting Machine
Surface wear is the main cause of hoist wire rope fracture failure.Understanding the influence of wear marks on wire rope failure and mechanical properties is an effective way to ensure the safety of multi-layer hoist.The fracture failure characteristics of wire ropes with different wear marks are studied through fracture tensile tests,and the temperature rise in the wear mark region is obtained and analysed.The mechanical properties of the abraded strands subjected to tensile loading were simulated using the finite element method.The results showed that plastic deformation and significant temperature rise occurred in the wear mark region.The temperature rise curves during the fracture tensile test can reflect the number and sequence of fractured wires.The wom outer layer of wires breaks before the inner layer of wires,and wires with irregular abrasion marks always break along the direction of sliding abrasion at the position of the greatest abrasion depth.The research results provide the basis for the research on the structural safety of hoist wire rope.
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