He's frequency-amplitude formulation for nonlinear oscillators with an irrational force
In this paper, He's frequency-amplitude formulation is applied to determine the periodic solution for a nonlinear oscillator system with an irrational force. Comparison with the exact solution shows that the result obtained is of high accuracy. (C) 2009 Elsevier Ltd. All rights reserved.
nonlinear oscillators periodic solution he's frequency formulation