Constitutive Model and Damage Evolution of Mudstone under the Action of Dry-Wet Cycles

Table 7

Elastic parameters under different dry-wet cycles at 105°C.

Number of dry-wet cycles		3	6	9	12	15
Confining pressure (0 MPa)	Elastic modulus (GPa)	0.120	0.112	0.109	0.106	0103
	Poisson’s ratio	0.3	0.3	0.3	0.3	0.3
	Bulk modulus (GPa)	0.100	0.094	0.091	0.088	0.085
	Shear modulus (GPa)	0.046	0.043	0.042	0.041	0.039
Confining pressure (2 MPa)	Elastic modulus (GPa)	0.345	0.323	0.313	0.304	0.295
	Poisson’s ratio	0.3	0.3	0.3	0.3	0.3
	Bulk modulus (GPa)	0.288	0.269	0.261	0.253	0.246
	Shear modulus (GPa)	0.133	0.124	0.120	0.117	0.113