重庆大学学报2025，Vol.48Issue(9)：104-112,9.DOI:10.11835/j.issn.1000-582X.2025.09.010
基于分离拉伸试验的钢芯铝绞线力学性能研究
Study on the mechanical properties of aluminum cable steel reinforced conductors based on separated tensile tests
摘要
Abstract
Due to slippage between dissimilar materials during tensile loading,clamping aluminum cable steel reinforced(ACSR)conductors presents challenges,often resulting in significant errors in conventional tensile tests.To address this,the tensile mechanical properties of ACSR-300/25 at 20℃were studied by separate tensile tests on the steel and aluminum strands.Finite element analysis was conducted to validate the experimental findings.The results show that aluminum strands exhibit neither a distinct strengthening stage nor a 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 to 1/3 of the specimen length,with the failure pattern following the twisting direction.In contrast,damage in the steel strands is generally concentrated on the same cross-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 the feasibility and effectiveness of the proposed testing method.关键词
钢芯铝绞线/分离试验/力学性能/数值模拟Key words
aluminum cable steel reinforced(ACSR)/separated test/mechanical properties/numerical simulation分类
通用工业技术引用本文复制引用
丁翰林,晏致涛,张璞..基于分离拉伸试验的钢芯铝绞线力学性能研究[J].重庆大学学报,2025,48(9):104-112,9.基金项目
国家自然科学基金资助项目(52178458,51778097) （52178458,51778097）
重庆市教委项目(KJZD-M201901502).Supported by National Natural Science Foundation of China(52178458,51778097),and Project of Chongqing Municipal Education Commission(KJZD-M201901502). （KJZD-M201901502）
