(1. 南瑞集团有限公司(国网电力科学研究院有限公司)，南京 211100；
2. School of Electrical Engineering, Ecole Supérieure d''Electricité, Rennes 999019, France；
3. 中南大学 材料科学与工程学院，长沙 410083)
摘 要: 采用目前常用的AA8030铝合金作为电缆导体，利用ABAQUS有限元软件对电气线路接续的压接过程进行模拟，分析压接处材料的应力分布特征。结果表明：电气接续的压接界面处，金具所受的径向应力明显高于铝合金电缆导体的径向力(高出5~25 MPa)，更易发生蠕变变形。另外，通过短时蠕变试验建立材料的蠕变本构模型，利用ABAQUS有限元软件对该过程进行模拟，得到了与试验数据相吻合的蠕变曲线，并可推算出该材料在不同应力下的长期蠕变性能，为抗蠕变材料的定量评定提供了一种准确快捷的方法。
关键字: 铝合金电缆；金具；压接；有限元模拟；蠕变
（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
