Issue 47

A. Bensari et alii, Frattura ed Integrità Strutturale, 47 (2019) 17-29; DOI: 10.3221/IGF-ESIS.47.02

degrees of freedom (DOF) that are tied to the nodes of the elements intersected by the crack.

Figure 9 : Compact tension Specimen CT75.

400

G Numerical (thick. 7 mm) G Analytical (thick. 7 mm)

G Numerical (thick. 14 mm) G Analytical (thick. 14 mm)

Base Metal

350

300

250

200

150

G (N/mm)

100

50

0

b)

15

20

25

30

35

40

45

50

Crack length (mm)

Figure 10 : The SIF and G values as a function of crack length for the base metal (B=7 and 14 mm).

400

G Numerical (thick. 7 mm) G Analytical (thick. 7 mm)

G Numerical (thick. 14 mm) G Analytical (thick. 14 mm)

HAZ

350

300

250

200

150

G (N/mm)

100

50

0

b)

15

20

25

30

35

40

45

50

Crack length (mm)

Figure 11 : The SIF and G values as a function of crack length for HAZ (B=7 and 14 mm).

25