Abstract Fretting fatigue tests were conducted on 6201-T81 aluminum alloy wires of an AAAC 900 MCM conductor. A finite element-based cont7act model combined with a nonlocal Smith–Watson–Topper criterion was used to estimate fatigue life. To account for the stress gradients beneath the contact, an average stress over a fatigue damage zone was adopted. A procedure for determining the size of the damage zone from V-notched wire test data is presented. Fatigue lives estimated using stresses from a linear elastic contact model were overly conservative, while the use of an elastic-plastic contact model significantly improved the estimates.

中文翻译：

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架空导线6201铝合金线的微动疲劳

摘要 对AAAC 900 MCM导体的6201-T81铝合金线材进行微动疲劳试验。基于有限元的 cont7act 模型结合非局部 Smith-Watson-Topper 准则用于估计疲劳寿命。为了说明接触下方的应力梯度，采用了疲劳损伤区的平均应力。介绍了根据 V 型缺口导线测试数据确定损坏区域大小的程序。使用来自线弹性接触模型的应力估计的疲劳寿命过于保守，而使用弹塑性接触模型显着改善了估计。