PSI - Issue 75

Per-Olof Danielsson et al. / Procedia Structural Integrity 75 (2025) 572–580 Per-Olof Danielsson et al. / Structural Integrity Procedia (2025)

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Fig. 4. Comparison of characteristics o f today’s method with the effective notch stress method.

A significant challenge in fatigue analysis is accurately capturing local stress conditions, such as stress gradients and singularities. The SFM approach solves this with pre-calculated geometry factors that address these stress variations, enabling efficient, more accurate fatigue assessments for complex welded structures. Quality measures for the root , as defined in the Volvo Welding Standard, is not a required input; only weld penetration depth is used. An overview of how the SFM approach is applied to the root side of a single-sided fillet weld is shown in Fig. 5, adapted from [2].

Fig. 5. Overview of the SFM process for the root side of single sided fillet welds. Details are shown and explained in [1-3].

3.2. Design and Simulation Advancements in CAD and FE-modeling have significantly supported modern fatigue analysis methods. Enhanced computational capabilities and improved software solutions facilitate quicker and more reliable evaluations, reducing the need for physical prototypes. Real-world operational data collected through IoT devices considerably enhancethe accuracy of structural simulations and optimization processes, particularly beneficial for exploring new applications and design concepts.