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Verification of He's frequency formulation by Duffing-Harmonic Oscillator
  • Z.L. Tao
Z.L. Tao
Nanjing Univ Informat Sci & Technol
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He's frequency formulation suggests the fast identification of the amplitude-frequency relationship of a nonlinear oscillator. This paper applies the formulation to the Duffing-harmonic oscillator with great success. A modification of He's frequency formulation and the variational iteration method are also used for comparison.