钢绞线弹性模量的理论计算及其影响因素分析

Theoretical Computing & Analysis Affecting Factors on Stranded Wire′s Elastic Module

根据钢绞线的几何特点推导出了钢绞线弹性模量的理论表达式 ,提出了钢绞线的形状系数概念 ,并且分析了钢绞线弹性模量的影响因素。钢绞线的内丝和外丝半径、捻距等几何参数对弹性模量的影响是主要因素 ,捻距越小弹性模量的损失越大 ,反之越小 ,因此在进行钢绞线的力学分析时将其等效成等截面圆杆是不恰当的。

The paper derives a theoretical equation of stranded wire′s elastic module from stranded wire′s geometric characteristic, and brings up the concept of form-coefficient of stranded wire, and analyses the affecting factors on stranded wire′s elastic module. The inside radius and outside radius of stranded wire and its lay length have effect on stranded wire′s elastic module. The more shorter the lay length is, the more larger the stranded wire′s elastic module loss. Thus it is not true that stranded wire is considered as uniform section circular truss.