PSI - Issue 19

Giovanni M. Teixeira et al. / Procedia Structural Integrity 19 (2019) 175–193 Author name / Structural Integrity Procedia 00 (2019) 000–000

179

5

  1

6 2 m I r 0.0011 r 0.0767 r 0.0988 r 0.0946 r 0.0221 r 0.014 r 1.2223              5 4 3

(8)

And under displacement controlled conditions:

  1

6 2 m I r 2.1549 r 5.0422 r 4.8002 r 2.0694 r 0.561 r 0.0097 r 1.5426              5 4 3

(9)

Where



r



b

(10)

  

m b

Fig. 3. I(r) functions for load and displacement controlled conditions.

It is worth noting that the fracture mechanics parameter m is set to 3.6 in the Equations 8 and 9, based on crack growth data presented from Hong et al. (2007).

Fig. 4. Loading mode effect represented by the parameter r .