PSI - Issue 80

Yohei Sonobe et al. / Procedia Structural Integrity 80 (2026) 368–377 Y. Sonobe et al. / Structural Integrity Procedia 00 (2023) 000–000

375

8

1 . 25

1 . 25

ν = 0 . 0 ν = 0 . 1 ν = 0 . 2 ν = 0 . 3 ν = 0 . 4 ν = 0 . 5

ν = 0 . 0 ν = 0 . 1 ν = 0 . 2 ν = 0 . 3 ν = 0 . 4 ν = 0 . 5

1 . 20

1 . 20

1 . 15

1 . 15

F I ( n )

F I ( n )

1 . 10

1 . 10

1 . 05

1 . 05

1 . 00

1 . 00

0 . 95

0 . 95

0 . 0

0 . 5

1 . 0

1 . 5

2 . 0

0 . 0

0 . 5

1 . 0

1 . 5

2 . 0

z o /a

z o /a

(a) n =0

(b) n =1

1 . 25

1 . 25

ν = 0 . 0 ν = 0 . 1 ν = 0 . 2 ν = 0 . 3 ν = 0 . 4 ν = 0 . 5

ν = 0 . 0 ν = 0 . 1 ν = 0 . 2 ν = 0 . 3 ν = 0 . 4 ν = 0 . 5

1 . 20

1 . 20

1 . 15

1 . 15

F I ( n )

F I ( n )

1 . 10

1 . 10

1 . 05

1 . 05

1 . 00

1 . 00

0 . 95

0 . 95

0 . 0

0 . 5

1 . 0

1 . 5

2 . 0

0 . 0

0 . 5

1 . 0

1 . 5

2 . 0

z o /a

z o /a

(c) n =2

(d) n =3

1 . 25

1 . 25

ν = 0 . 0 ν = 0 . 1 ν = 0 . 2 ν = 0 . 3 ν = 0 . 4 ν = 0 . 5

ν = 0 . 0 ν = 0 . 1 ν = 0 . 2 ν = 0 . 3 ν = 0 . 4 ν = 0 . 5

1 . 20

1 . 20

1 . 15

1 . 15

F I ( n )

F I ( n )

1 . 10

1 . 10

1 . 05

1 . 05

1 . 00

1 . 00

0 . 95

0 . 95

0 . 0

0 . 5

1 . 0

1 . 5

2 . 0

0 . 0

0 . 5

1 . 0

1 . 5

2 . 0

z o /a

z o /a

(e) n =4

(f) n =5

Fig. 4. Distribution of the normalized SIF, F I ( n ) , as a function of normalized depth, z o / a , for various Poisson’s ratios ν and pressure orders ( n = 0 , 1 , . . . , 5 ).