AM  Vol.5 No.10 , June 2014
Harmonic Solutions of Duffing Equation with Singularity via Time Map
Abstract: This paper is devoted to the study of second-order Duffing equation with singularity at the origin, where  tends to positive infinity as , and the primitive function as . By applying the phase-plane analysis methods and Poincaré-Bohl theorem, we obtain the existence of harmonic solutions of the given equation under a kind of nonresonance condition for the time map.
Cite this paper: Xia, J. , Zheng, S. , Lv, B. and Shan, C. (2014) Harmonic Solutions of Duffing Equation with Singularity via Time Map. Applied Mathematics, 5, 1528-1534. doi: 10.4236/am.2014.510146.

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