In fretting fatigue, the local stress concept leads to a significant underestimation of fatigue life. Conventional fatigue models lack conservatism in dovetail structures due to mesh dependency and cumulative plastic deformations. The present study aims to develop a nonlocal life model for fretting fatigue of dovetail joints based on extensive experimental and computational analyses. Frictional work was analytically derived and utilized to describe fretting damage, combined with a multiaxial fatigue model. The developed model aligns well with experimental results under various loading conditions, with deviations falling within a double-error band.

中文翻译：

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燕尾接头的非局部微动疲劳评估

在微动疲劳中，局部应力概念导致疲劳寿命的显着低估。由于网格依赖性和累积塑性变形，传统疲劳模型在燕尾结构中缺乏保守性。本研究旨在基于广泛的实验和计算分析，开发燕尾接头微动疲劳的非局部寿命模型。通过分析得出摩擦功，并结合多轴疲劳模型来描述微动损伤。开发的模型与各种负载条件下的实验结果非常吻合，偏差落在双误差带内。