Table 2: Normalized mode-I stress intensity factor for isolated penny-shaped crack subjected to uniform normal traction.

MeshIsotropic material, 𝐾 1 / 𝐾 1 , e x a c t Transversely isotropic material, 𝐾 1 / 𝐾 1 , e x a c t
ZincGraphite-reinforced composite
𝜃 = 0 𝜃 = 9 0 𝜃 = 0 𝜃 = 9 0 𝜃 = 0 𝜃 = 9 0

10.99190.99200.98900.98900.98410.9841
21.00081.00081.00011.00011.00531.0053
31.00021.00021.00041.00041.00061.0001