PSI - Issue 28

Chahboub Yassine et al. / Procedia Structural Integrity 28 (2020) 1930–1940 CHAHBOUB YASSINE / Structural Integrity Procedia 00 (2019) 000–000

1938

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It seems that the change of the parameters f c , f f , ɛ n , f n, and S n, values will not affect the failure prediction macroscopically. It not possible to launch any simulation when the value of f f is lower than the value of f c The next step is to determine the sensitive parameters in the case of CT specimen. We have done ten simulations for each parameter, and each simulation took six hours. The results of the Force versus crack opening displacement (COD) for CT specimens are shown in the figures below.

10 15 20 25 30 35 40 45 50

Force kN

Range of variation based on the calculation of the coefficient of variation 10.32% ≤ CV%.≤14.43%

0 5

COD(mm)

0

0,5

1

1,5

2

2,5

3

3,5

4

Fig 10. Initial void volume fraction f

10 15 20 25 30 35 40 45 50

FORCE kN

Range of variation based on the calculation of the coefficient of variation 14.22% ≤ CV%.≤20.93%

0 5

COD (mm)

0

1

2

3

4

5

Fig 11 the voids nucleation means the quantity