Enriched Element-Free Galerkin Method for Fracture Analysis of Functionally Graded Piezoelectric Materials

Table 3

The modified -integral under different Gauss integral (N/m).

Crack length/m	Analytical solution	EFGM	Error	EEFGM	Error
0.02	−11.6700	−11.0545	5.27%	−11.2731	3.40%
0.04	−23.3401	−22.3714	4.15%	−22.5783	3.26%
0.06	−35.0101	−33.4458	4.47%	−34.1697	2.40%
0.08	−46.6802	−44.6503	4.35%	−45.3592	2.83%
0.10	−58.3502	−55.3427	5.15%	−56.3740	3.39%