Table 2:
Normalized mode-I stress intensity factor for isolated penny-shaped crack subjected to uniform normal traction.
Mesh
Isotropic material,
𝐾
1
/
𝐾
1
,
e
x
a
c
t
Transversely isotropic material,
𝐾
1
/
𝐾
1
,
e
x
a
c
t
Zinc
Graphite-reinforced composite
𝜃
∘
=
0
𝜃
∘
=
9
0
𝜃
∘
=
0
𝜃
∘
=
9
0
𝜃
∘
=
0
𝜃
∘
=
9
0
1
0.9919
0.9920
0.9890
0.9890
0.9841
0.9841
2
1.0008
1.0008
1.0001
1.0001
1.0053
1.0053
3
1.0002
1.0002
1.0004
1.0004
1.0006
1.0001