The calculation results

Different dip angles of pre-exciting crack(˚)

15

30

45

60

75

$\tau$

5

8.66

10

8.66

5

${\sigma }_N$

17.66

14

9

4

0.34

${\sigma }_T$

0.34

4

9

14

17.66

$K_{{\rm I}}$

−2.40

−1.65

−0.62

0.41

1.17

$K_{{\rm I}{\rm I}}$

−0.69

−1.19

−1.37

−1.19

−0.69

$\theta$

126.6

97.2

79.3

64.1

43.7