PSI - Issue 12

Venanzio Giannella et al. / Procedia Structural Integrity 12 (2018) 479–491 V. Giannella/ Structural Integrity Procedia 00 (2018) 000 – 000

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2.2. FEM results

Plots of temperature and von Mises stress fields, obtained by FEM simulations corresponding to the pre take-off 1 phase (Fig. 3), which is most critical among the considered six load cases (Fig. 4), are shown in Fig. 5 for both FEM model and submodel. The Von Mises stresses and temperature distribution shown in Fig. 4 are related to the most critical material point coinciding with the crack insertion point (highlighted in Figs. 4b, d).

Figure 4. Temperature and von Mises stresses for the most critical node along the mission profile.

(a)

(b)

(c)

(d)

Figure 5. Temperature (a) and von Mises stress (b) fields by FEM global model; temperature (c) and von Mises stress (d) fields by FEM submodel; highlight of the crack insertion position in (b) and (d).