PSI - Issue 72

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

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(a) (c) Fig. 4. (a) Mesh of the simplified model; (b) imported cut-boundary displacements; (c) imported temperature distribution. (b)

Fig. 5. Boundary conditions – calculated cut-boundary displacements, pressure, imported temperatures.

(a) (b) Fig. 6. Different FE models: (a) with EDM cut and L = 0.1 mm and (b) without EDM cut and L = 2 mm.

First model – Model 1 – contained 2 mm unintentionally made EDM cut (notch) with an initial crack ( L = 0.1 mm), and the second model – Model 2 – was without an EDM cut (notch) but with an initial crack of 2 mm at the position of the previously defined EDM cut to simulate it. FE mesh for the Model 1 consists of 299 112 nodes and 198 559 elements and for the Model 2 it consists of 395 257 nodes and 268 349 elements. Crack growth simulations were based on the linear-elastic fracture mechanics assumption and with employed Paris law model, where the stress ratio