Abstract Fretting fatigue crack propagation in aluminium strands was investigated through experimental tests and FEM simulations. Fretting fatigue tests revealed that crack nucleation predictions are not sufficient to fully predict the total strand failure, and crack arrest conditions may be reached for nucleated cracks. The geometry of arrested cracks was characterized and used to perform simulations using FEM in order to dedude Stress Intensity Factor (SIF) distributions along the crack front. These results showed that even in a fully compressive state, cracks are still able to propagate to a certain extent, and a mode II SIF threshold has been proposed.

中文翻译：

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压缩状态下剪切驱动裂纹止裂研究：铝绞线微动疲劳失效的预测

摘要 通过实验测试和有限元模拟研究了铝绞线的微动疲劳裂纹扩展。微动疲劳试验表明，裂纹成核预测不足以完全预测总钢绞线失效，并且可能达到成核裂纹的止裂条件。捕获裂纹的几何形状被表征并用于使用 FEM 进行模拟，以推算沿裂纹前沿的应力强度因子 (SIF) 分布。这些结果表明，即使在完全压缩状态下，裂纹仍然能够在一定程度上扩展，因此提出了 II 型 SIF 阈值。