基于分离拉伸试验的钢芯铝绞线力学性能研究

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中图分类号：TB121 文献标志码：A 文章编号：1000-582X（2025）09-104-09

Abstract：Due to slippage between dissimilar materials during tensile loading，clamping aluminum cable steel reinforced （ACSR）conductors presents chalenges，often resulting in significant errors in conventional tensile tests.To address this，the tensile mechanical properties ofACSR-3o0/25at 20∘C were studied by separate tensile tests onthe steel and aluminum strands.Finite element analysis was conducted to validate the experimental findings.Theresults show that aluminum strands exhibit neither a distinct strengthening stage nora clear yield point，while the steel strands show a well-defined elastic region，yield stage，strengthening phase，and localized necking.Damage in the aluminum strands predominantly occurs between 1/2 to1/3 of the specimen length，with thefailure patern following the twisting direction.In contrast，damage in the steel strands is generally concentrated on the same cros-sectional plane near the spcimen’s center.The results of the separated tests for both the steel and aluminum strands are in good agreement with the overall ACSR simulation result，confirming thefeasibility and effectiveness of the proposed testing method.

Keywords： aluminum cable steel reinforced （ACSR）;separated test; mechanical properties; numerical simulation

导线的张拉力学性能是研究输电线路垂度、风偏、舞动等的重要指标，是保证输电线路顺利、安全运行的关键问题。（剩余11310字）