PSI - Issue 81

Roman Samchuk et al. / Procedia Structural Integrity 81 (2026) 184–191

191

meshes A to D the stress increases from about 36 MPa to 110 MPa, whereas further refinement from meshes E to G changes the value only slightly (from roughly 118.5 MPa to 120.1 MPa, i.e. less than 1.5%). The mesh used in the main analyses (mesh F) lies on this plateau, where further refinement from F to G changes the value by less than 0.7%. The convergence behaviour confirms that the adopted discretisation is su ffi cient for the purposes of this fatigue study and that the reported ≈ 22% increase in fatigue damage between Scenarios V and VH is not driven by meshing artefacts.

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