Compression and Shear Fracture Analysis of Boundary Cracks Containing Water in Rock

Table 2

Error analysis of theoretical and numerical results for closed crack.

Friction coefficient	Stress intensity factor (MPa·m^1/2)	Theoretical result	Numerical result	Relative error (%)
		−1.0774	−1.0812	0.35
		−2.9600	−3.0301	2.31
		−1.0774	−1.0369	3.91
		−2.7445	−2.8770	4.61
		−1.0774	−1.0603	1.61
		−2.6368	−2.5444	3.63
		−1.0774	−1.0546	2.16
		−2.5291	−2.5282	0.04
		−1.0774	−1.0707	0.63
		−2.4213	−2.4438	0.91
		−1.0774	−1.0369	3.91
		−2.3136	−2.3272	0.59
		−1.0774	−1.0792	0.16
		−2.2058	−2.1945	0.51
		−1.0774	−1.0650	1.15
		−2.0981	−2.1462	2.29