Effect of pitch on mechanical properties of braided wire rope under winding and traction condition

Abstract

In the tension stringing construction process of power transmission and transformation engineering, the braided wire ropes (BWRs) are in the state of winding and stretching when passing through the friction drum. Pitch is an important structural parameter of BWRs, which directly influences the mechanical behaviors under these conditions. Based on the YS9-8×19 wire rope, this project studies the effect of the rope strand pitch on the curvature and winding from both qualitative and quantitative aspects. Qualitative analysis initially explores the effect of the pitch on the mechanical behaviors. Based on the established “rope-wheel” solid model and numerical simulation model, the stress distribution and the variation trend of the maximum equivalent stress corresponding to different pitches in the winding traction state are obtained through the quantitative analyses of the numerical simulations under the same loads with different pitches. The reasonable pitch range of the BWR subjected to traction and bending load is further concluded, to provide the data reference for the manufacture of related wire ropes.