Interaction Analysis of Collinear Two Cracks with Unequal Length under Uniaxial Traction

Table 4

Parameters of numerical model.

Materials	Elastic modulus; / GPa	Density; / kg·m^−3	Internal friction angle	Poisson ratio	Average compressive strength; / MPa
Sandstone	10 ~ 100	2000 ~ 2600	4 ~ 25	0.1 ~ 0.3	20 ~ 200
Model	15.2	2350	30	0.15	53