Abstract
The breaking of steel core in the early stage of steel wire rope is a very important factor that restricts the service life of steel wire rope. By analyzing the failure of steel core broken wire, it is found that the key factor affecting the force of twisted strands is the establishment of wire gap model. Based on this, two mathematical models of the elliptic hypothesis and the non-elliptic hypothesis of the steel wire section in twisted strands are established, and two formulas for calculating the steel wire gap are derived. When the steel wire twist Angle is within a certain range, the gap of these two models is very close, but when the twist Angle exceeds a certain value, the difference between the steel wire gap becomes larger and larger. Based on this, the non-elliptic model is used to design different steel core lay lengths, and the experiment verifies that the elastic modulus of the elastic model is close to that of the steel wire rope, which reduces the tensile stress on the steel core when the steel wire rope is used, and improves the phenomenon of steel core breaking.
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