PSI - Issue 71

V. Thondamon et al. / Procedia Structural Integrity 71 (2025) 226–232

231

Fig. 5. Typical stress distribution in the pipe during indentation of the dent.

12000 15000

60 mm 80 mm 100 mm

0 3000 6000 9000

Strain (x10^-6)

0.00 0.20 0.40 0.60 0.80 1.00 1.20

Duration of re-rounding

Fig. 6. Strain variation vs duration of re-rounding at various distances from center of dent in longitudinal direction. 0 2000 4000 6000 8000 10000 0.00 0.20 0.40 0.60 0.80 1.00 1.20 Strain (x10^-6) Duration of re-rounding 60 mm 80 mm 100 mm

Fig. 7. Strain variation vs duration of re-rounding at various distances from center of dent in circumferential direction.

5. Summary In the present study, dent formation and re-rounding were studied for the piping components using finite element