The peak stress method (PSM) is a rapid, FE-oriented method to evaluate notch stress intensity factors. In fatigue design of welded components, the PSM has been previously validated against>1300 experimental data to estimate the lifetime of steel welded joints under constant amplitude (CA) loadings. In the present work, the PSM has been extended to account for variable amplitude (VA) uniaxial as well as multiaxial loadings. To this aim, the PSM has been combined with the Miner’s Linear Damage Rule and it has been successfully validated against a large bulk of VA fatigue data taken from the literature.

中文翻译：

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使用峰值应力法对钢焊接接头进行多轴变幅疲劳强度评估

峰值应力法 (PSM) 是一种快速的、面向 FE 的方法，用于评估缺口应力强度因子。在焊接部件的疲劳设计中，PSM 先前已针对超过 1300 个实验数据进行了验证，以估计钢焊接接头在恒定振幅 (CA) 载荷下的寿命。在目前的工作中，PSM 已扩展到考虑可变振幅 (VA) 单轴和多轴载荷。为此，PSM 已与 Miner 的线性损伤规则相结合，并已针对从文献中获取的大量 VA 疲劳数据成功验证。