关键词: 钢丝绳, 接触模型, 应力分布, 有限元法

Abstract:

A three-dimensional contact model of 1×19IWS steel strand was established. Contact point was searched by Splitting-pinball algorithm, Augmented-Lagrangian algorithm was applied for analysis of contact loads.  The exerted tensile loads to the model was analyzed using FEM. After analysis of calculation results, the laws of steel wire stress distribution in axis direction and in its cross section were found. Friction coefficients were set as 0.10, 0.11 and 0.12 respectively to obtain the influence law of friction coefficient on steel wire stresses.   Research result show that friction coefficient has significant influence on the shear stress of steel wire. The calculation results of steel strand with five different lay pitch multiples were analyzed and the influence law of lay pitch multiple on the stresses of steel wire in steel strand was obtained. The Von Mises stress of steel wire increases following with lay pitch multiples, but the increment value is not very prominent. The shear stress of steel wire decreases following with the increase of lay pitch multiple, the changing amplitude is large when lay pitch multiple is small. Finally, a steel strand tensile deformation test was carried out and the consistency of test results with the calculation results shows that the selected model is reasonable.

Key words: steel strand, contact model, stress distribution, finite element method(FEM)