Issue 60

R. Karimihaghighi et alii, Frattura ed Integrità Strutturale, 60 (2022) 187-212; DOI: 10.3221/IGF-ESIS.60.14

 

  

. w D t

 

H H c

1

(7a)



RSF

 

  

. w D

 

H H

1 1

M t

t

c

  1.285 c s Dt

(7b)

where H D is the damage parameter and for the HIC damage it is set as 0.80. Table 1 by using the value of λ (Longitudinal or Meridional Flaw Parameter).

t M is Folias Factor and determined from

t M Cylindrical or Conical Shell

λ

Spherical Shell

0

1.002 1.056 1.199 1.394 1.618 1.857 2.103 2.351 2.600 2.847 3.091 3.331 3.568 3.801 4.032 4.262 4.492 4.727 4.970 5.225 5.497 5.791 6.112 6.468 6.864 7.307 7.804 8.362 8.989 9.693

1.000 1.063 1.218 1.427 1.673 1.946 2.240 2.552 2.880 3.221 3.576 3.944 4.323 4.715 5.119 5.535 5.964 6.405 6.858 7.325 7.806 8.301 8.810 9.334 9.873

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

5.5

6

6.5

7

7.5

8

8.5

9

9.5 10

10.5

11

11.5

12

12.5

10.429 11.002 11.592 12.200 12.827 13.474 14.142 14.832

13

13.5

14

14.5

15

10.481 11.361 12.340 13.423

15.5

16

16.5 15.544 Table 1: Determining Folias Factor ( ௧ ) for Cylindrical, Conical and Spherical Shells, Based on λ (the Longitudinal or Meridional Flaw Parameter) [5].

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