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This paper evaluates the fatigue life of notched components under High Cycle Fatigue (HCF) conditions using the Affected Depth (AD) approach. The investigation assumes that there is a hole at the specimen surface that is subjected to fatigue loading. The Finite Element simulation is employed to determine the stress distribution around the notch. The proposed model is assessed using the Crossland criterion. Based on the affected depth method, this criterion is applied to determine the equivalent stress distribution close to the weakness. The AD is defined by this technique as the distance between the interior of the specimen and the tip of the defect where the Crossland condition is violated. Model validation and comparison are performed using experimental data from the defective EN3B steel, and the results demonstrate a strong correlation with the experimental data.

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Fatigue Strength Analysis of EN3B Steel with Hole Defects Under Tensile Loading Using the Affected Depth Approach

  • 会议论文

  • 发表日期：

    2025年

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  • Marwa Youssef,
  • Anouar Nasr,
  • Nesrine Majed

摘要

This paper evaluates the fatigue life of notched components under High Cycle Fatigue (HCF) conditions using the Affected Depth (AD) approach. The investigation assumes that there is a hole at the specimen surface that is subjected to fatigue loading. The Finite Element simulation is employed to determine the stress distribution around the notch. The proposed model is assessed using the Crossland criterion. Based on the affected depth method, this criterion is applied to determine the equivalent stress distribution close to the weakness. The AD is defined by this technique as the distance between the interior of the specimen and the tip of the defect where the Crossland condition is violated. Model validation and comparison are performed using experimental data from the defective EN3B steel, and the results demonstrate a strong correlation with the experimental data.