A Cell-Based Smoothed XFEM for Fracture in Piezoelectric Materials

Table 3

Normalized intensity factors under different crack lengths for electromechanical Griffith crack (uniaxial load).

	Normalized intensity factors	PZT-4		P-7
		CS-XFEM	XFEM	CS-XFEM	XFEM
0.5 m	/	0.989	0.965	0.978	0.967
	/	0.994	0.974	0.986	0.978
1.0 m	/	0.941	0.932	0.948	0.925
	/	0.963	0.940	0.956	0.948
1.5 m	/	0.983	0.966	0.988	0.978
	/	0.987	0.973	0.979	0.979
2.0 m	/	0.991	0.969	0.993	0.970
	/	0.993	0.987	0.984	0.978