Considerations regarding the working life of the component wires in a wire-rope

摘要

Steel ropes are important elements for the functioning of the machineries and of the equipment for transportation: mineral-drawing installations, boring plants, cranes, elevators, excavators, funiculars. Examining the wires of an out-of work steel rope, they noticed that the local compression stress in between the wires had such high values that it produced an impression on the wire in the contact area. The contact stress appears between the wires of the same rope strand, of two adjacent rope strands and between the wires and the rope take-up roller. The paper shows the research regarding the induced and deforming stress at the moment of contact between wires and the traction cable take-up roller. The results will be used to calculate the fatigue crack propagation and to estimate the steel rope working life.