Iterative Homotopy Harmonic Balance Approach for Determining the Periodic Solution of a Strongly Nonlinear Oscillator

Table 2

Comparison of approximate periods with the exact period for Case 2.

	(RE)	(RE)
0.01	6.25976 (0.00000)	6.25976 (0.00000)	6.25976
0.1	6.06066 (0.00000)	6.06066 (0.00000)	6.06066
1	4.76792 (0.00210)	4.76803 (0.00021)	4.76802
10	2.19094 (0.03878)	2.19191 (0.00548)	2.19179
100	0.75814 (2.97178)	0.73633 (0.00951)	0.73626
1000	0.234194 (0.06230)	0.23437 (0.01281)	0.23434