PSI - Issue 72

Nenad Vidanović et al. / Procedia Structural Integrity 72 (2025) 499– 506

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Fig. 2. Framework for Paris’ coefficients determination.

(a) (c) Fig. 3. (a) 3D HPT casing FE model; (b) boundary conditions for steady-state thermal analysis; (c) boundary conditions for static structural analysis. For the purpose of the casing FE model simplification, the cut-boundary displacement method was used to obtain a sub-model (Fig. 4. (a)). On the sub-model, calculated cut-boundary displacements (Fig. 4. (b)), imported temperatures (Fig. 4. (c)) and pressure (Fig. 5.), as boundary conditions, were applied. To conduct fatigue crack growth analysis (FCGA), separating morphing and adaptive remeshing technology (SMART), which enables the crack insertion into geometry at a desired location and automatic remeshing after each step of the simulated crack growth, was employed. For better understanding of the EDM cut influence, two different geometries and FE models were made and simulated to compare the residual life for both models (Fig. 6.). (b)