When power transmission cables are subjected to oscillatory displacements, due to the wind vibration, fretting fatigue phenomenon takes place, being the main prompter of catastrophic failure. In this work, we investigate the behavior of an 1350-H19 aluminum wire, that is a structural element of the IBIS (ACSR 397.5 MCM) conductor cable, when subjected to fretting fatigue. For this, a numerical methodology was developed, in which a three-dimensional finite element model was constructed to obtain the maximum Von Mises stresses in the vicinity of the wire-to-wire contact. Thus, a stress-based uniaxial fatigue approach was implemented, resulting in S–N curves. The effect of mean stresses on fatigue behavior was also considered through a series of well-known models. The data generated in this process were validated with experimentally obtained S–N curves on a MTS 322.21 machine, especially modified for this purpose. Most of the results were within the limits considered, with slightly conservative tendencies. A new value of adjustable material parameter has been proposed to be used with Walker’s model, increasing the accuracy of the predictions.

当电力传输电缆发生振荡位移时，由于风的振动，会发生微动疲劳现象，这是灾难性故障的主要原因。在这项工作中，我们研究1350-H19铝线在微动疲劳下的行为，这是IBIS（ACSR 397.5 MCM）导体电缆的结构元件。为此，开发了一种数值方法，其中构建了三维有限元模型，以获取线对线接触附近的最大冯·米塞斯应力。因此，实施了基于应力的单轴疲劳方法，从而产生了S–N曲线。还通过一系列众所周知的模型来考虑平均应力对疲劳行为的影响。在MTS 322.21机器上，通过实验获得的S–N曲线验证了在此过程中生成的数据，并为此进行了专门修改。大多数结果都在所考虑的范围内，且趋势偏保守。已经提出将可调节材料参数的新值与Walker模型一起使用，从而提高了预测的准确性。