Influence of Existing Defects on Mechanical Properties of NC Lining

Table 1

Values of the plastic parameters for the CDP model.

Dilation angle (ψ)	Eccentricity (e)	The ratio of yield stress fb0/fc0	The ratio of the second stress invariant on the tensile meridian (K)	Viscosity parameter (ν)
30°	0.1	1.16	0.667	1E−05