Approximate periodic solutions for the Helmholtz–Duffing equation

Variational approach for nonlinear oscillators

Ji‐Huan He · Chaos Solitons & Fractals · 2006 · 380 citations

Oscillation Theory, Nonlinear Oscillators, Calculus Of Variation +1

Preliminary report on the energy balance for nonlinear oscillations

Ji‐Huan He · Mechanics Research Communications · 2002 · 308 citations · Full text

Oscillation Theory, Nonlinear Oscillations, Nonlinear Oscillation +1

Solutions of singular IVPs of Lane–Emden type by homotopy perturbation method

Ahmet Yıldırım, Turgut Öziş · Physics Letters A · 2007 · 204 citations

Perturbation Method, Singularly Perturbed Problem, Lane–emden Type +2

Frequency analysis of strongly nonlinear generalized Duffing oscillators using He’s frequency–amplitude formulation and He’s energy balance method

Davood Younesian, Hassan Askari, Zia Saadatnia · Computers & Mathematics with Applications · 2010 · 138 citations

Engineering, Frequency Analysis, Oscillation Theory +4

Comment on ‘He's frequency formulation for nonlinear oscillators’

Ji‐Huan He · European Journal of Physics · 2008 · 109 citations

Numerical Analysis, Location Choice, Nonlinear Oscillators +6