PSI - Issue 28

L.V. Stepanova et al. / Procedia Structural Integrity 28 (2020) 2277–2282 Author name / Structural Integrity Procedia 00 (2019) 000–000

2280

4

(Fig. 3). To validate the approximate solution finite element calculations have been performed. The comparison of the approximate solution obtained by the quasilinearization method and the numerical solution given by finite element approach shows that both solutions are in good agreement (Fig. 3).

Fig. 1. Convergence of radial stress r  (left) and circumferential stress   (right) using quasilinearisation for 5 n 

Fig. 2. Radial stress r  (left) and circumferential stress   (right) for different values of the creep exponent