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

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7

1 . 25

1 . 25

N e = 1200 N e = 4800 N e = 19200

1 . 20

1 . 20

1 . 15

1 . 15

F I ( n )

F I ( n )

1 . 10

1 . 10

1 . 05

1 . 05

N e = 1200 N e = 4800 N e = 19200

1 . 00

1 . 00

0 . 95

0 . 95

10 − 2

10 − 1

10 − 2

10 − 1

10 0

10 1

10 0

10 1

z o /a

z o /a

(a) n =0

(b) n =1

1 . 25

1 . 25

N e = 1200 N e = 4800 N e = 19200

N e = 1200 N e = 4800 N e = 19200

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

10 − 2

10 − 1

10 − 2

10 − 1

10 0

10 1

10 0

10 1

z o /a

z o /a

(c) n =2

(d) n =3

1 . 25

1 . 25

N e = 1200 N e = 4800 N e = 19200

N e = 1200 N e = 4800 N e = 19200

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

10 − 2

10 − 1

10 − 2

10 − 1

10 0

10 1

10 0

10 1

z o /a

z o /a

(e) n =4

(f) n =5

Fig. 3. Mesh convergence of the normalized SIF, F I ( n ) , for different pressure orders ( n = 0 , 1 , . . . , 5 ) at ν = 0 . 5 . Results for three mesh densities are compared: base ( N e = 1200 ), fine ( N e = 4800 ), and extra-fine ( N e = 19200 ).