PSI - Issue 81

Denys Rudavskyi et al. / Procedia Structural Integrity 81 (2026) 151–155

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K II was performed by iteratively densifying the mesh; the results stabilised with a relative variation of less than 1%, confirming that the mesh density was sufficient for reliable SIF calculation.

Fig. 2. Geometry sketch of a repeating arch bridge segment (AutoCAD).

Fig. 3. Finite element mesh model of a representative segment of the arch bridge.

Fig. 4. Visualization of maximum Tresca stresses on the inner contour of the arch and identifying of the crack critical plane orientation.