PSI - Issue 60

S.K. Pandey et al. / Procedia Structural Integrity 60 (2024) 3–12 S. K. Pandey/ Structural Integrity Procedia 00 (2023) 000–000

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Table 1. Unique Ramberg-Osgood parameters for SS316LN

Temperature

n

α

298 K (25°C)

2.72

10

923 K (650°C)

2.67

8.62

3. Comparison of FEA and experimental data The comparisons of load-displacement curves generated by finite element analysis with the experimental results (Kumar et al. 2014, Nandagopal et al. 2011) have been carried out for the all types of specimens. Finite element analysis has been carried out with two types of material stress-stain data. First, the stress-strain data was evaluated by unique Ramberg- Osgood parameters (n, α). Second, the stress -strain data was evaluated by the smooth specimen experimental result. Comparison of load-displacement curves, at the temperature of 298K, for the smooth, notch-2.5 and notch-5 have been depicted in Fig.13 and Fig.14 respectively. Comparison of load-displacement curves, at the temperature of 923K, for the smooth, notch-2.5 and notch-5 have been depicted Fig.15 and Fig.16 respectively

Fig 14. Load-displacement curves for notch-5 mm specimen at 298K

Fig 13. Load-displacement curves for notch-2.5 mm specimen at 298K

Fig 15. Load-displacement curves for notch-5 mm specimen at 923K

Fig16. Load-displacement curves for notch-5 mm specimen at 923K