(1. 南瑞集團有限公司(國網電力科學研究院有限公司)，南京 211100；
2. School of Electrical Engineering, Ecole Supérieure d''Electricité, Rennes 999019, France；
3. 中南大學 材料科學與工程學院，長沙 410083)
摘 要: 采用目前常用的AA8030鋁合金作為電纜導體，利用ABAQUS有限元軟件對電氣線路接續(xù)的壓接過程進行模擬，分析壓接處材料的應力分布特征。結果表明：電氣接續(xù)的壓接界面處，金具所受的徑向應力明顯高于鋁合金電纜導體的徑向力(高出5~25 MPa)，更易發(fā)生蠕變變形。另外，通過短時蠕變試驗建立材料的蠕變本構模型，利用ABAQUS有限元軟件對該過程進行模擬，得到了與試驗數據相吻合的蠕變曲線，并可推算出該材料在不同應力下的長期蠕變性能，為抗蠕變材料的定量評定提供了一種準確快捷的方法。
關鍵字: 鋁合金電纜；金具；壓接；有限元模擬；蠕變
（1. Nari Group Corporation (State Grid Electric Power Research Institute Corporation), Nanjing 211100, China;
2. School of Electrical Engineering, Ecole Supérieure d''Electricité, Rennes 999019, France;
3. School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The performance matching of aluminum alloy cable conductor and metal fitting is very import to the compressive quality of electrical wiring. Using the currently common AA8030 aluminum alloy as cable conductor, the compression process of the electrical wiring connection was simulated by ABAQUS finite element software, and the stress distribution characteristics of the material used for compression were analyzed. The results show that the radial stress of the fitting is significantly higher than that of the aluminium alloy cable conductor by 5-25 MPa, which is more prone to creep deformation.In addition, the creep constitutive model of the material was established by short-term creep test. This process was simulated by ABAQUS finite element software, the consistent with the test data of creep curve is obtained. The method can calculate the long-term creep property of the material under different stress, which provides an accurate and fast method for quantitative evaluation of creep materials.
Key words: AA3003 aluminium alloy; fitting; compression type; finite element simulation; creep
