Table 2.

Comparison of the efficiency and accuracy of the proposed algorithm with those of Knops’ algorithm.

Stress State	Knops’s Algorithm				Proposed Algorithm
	Step Size (o)	ϕfp (o)	N	Time (s)	ϕfp (o)	N	Time (s)
1 (pure shear)	1	45	180	0.0625	45.0114	22	0.0113
	0.1	45	1800	0.1250
2 (pure shear)	1	0	180	0.0781	4.44 × 10−16	22	0.0142
	0.1	0	1800	0.2344
3 (uniaxial compression)	1	54	180	0.0625	54.271	25	0.0156
	0.1	54.5	1800	0.2561
4 (arbitrary 3D)	1	68	180	0.0732	67.8691	22	0.0156
	0.1	67.9	1800	0.1094