A Statistical Damage Constitutive Model for Geomaterials under Plane-Strain Biaxial Stress State

Figure 3

Weibull distribution and damage transition processes. These rectangles represent rocks with different degrees of damage. represents the undamaged area and the force of the undamaged area is determined by the net stress () of undamaged portion, while for damaged portion (Sr), a residual strength () is applied (modified from Zhao et al. [32]).