Gneiss Rock parameters | Value |
Density | 2.7 |
Young’s modulus E (GPa) | E1 = 12.5; E2 = 12; E3 = 12.5 |
Poisson’s ratio ν | ν1 = 0.35; ν2 = 0.24; ν3 = 0.3 |
Shear modulus G (GPa) | G1 = 4.6; G2 = 4.75; G3 = 4.86 |
Tensile strength is σt (MPa) | 10.9 |
Mode 1 fracture toughness (MPa.mm1/2) | 0.3 |