CAJ | 학술논문

研究扩径导线分层应力计算，能够为扩径导线的应用提供技术支持。考虑扩径导线的几何特征，对扩径导线的分层应力计算进行了理论分析，推导了扩径导线分层应力计算的理论公式；建立了扩径导线的有限元模型，考虑股线间的接触非线性，对张拉载荷工况的扩径导线进行了分析；将理论计算与有限元仿真计算的结果进行了对比研究。研究结果表明：张拉载荷下扩径导线分层应力计算的理论公式与有限元结果的对比基本吻合；张拉载荷作用下，扩径导线各绞层股线所受轴向拉力从内向外逐渐减小，钢芯所受轴向应力相对较大，铝绞层所受轴向应力较小。
연구확경도선분층응력계산，능구위확경도선적응용제공기술지지。고필확경도선적궤하특정，대확경도선적분층응력계산진행료이론분석，추도료확경도선분층응력계산적이론공식；건립료확경도선적유한원모형，고필고선간적접촉비선성，대장랍재하공황적확경도선진행료분석；장이론계산여유한원방진계산적결과진행료대비연구。연구결과표명：장랍재하하확경도선분층응력계산적이론공식여유한원결과적대비기본문합；장랍재하작용하，확경도선각교층고선소수축향랍력종내향외축점감소，강심소수축향응력상대교대，려교층소수축향응력교소。
This study about expanded conductor stratified stress calculations could provide technical support for the production and application of the expanded conductor. First, considering the geometric characteristics of expanded conductor, the theoretical analysis of stratified stress calculation of expanded conductor was done and the theoretical formula for stratified stress calculation was deduced. Then, a finite element model of expanded conductor was de-veloped and the tensile load condition was studied, considering the nonlinear contact of the strands. Finally, the results of the theoretical calculations were compared with those of the finite element simulation. The results showed that the results of the theoretical formula for stratified stress calculation of expanded conductor were basically con-sistent with those in the simulation. Under the tensile load, the axial tension in each layer of expanded conductor decreased from the inside to the outside, and the inner strands made of steel withstood larger force while the alumi-num layer’ s axial tension was weaker.