%0 Journal Article %A Yiming Jin and Yuanhao Gao %D 2016 %J International Journal of Marine and Environmental Sciences %B World Academy of Science, Engineering and Technology %I Open Science Index 115, 2016 %T Second Sub-Harmonic Resonance in Vortex-Induced Vibrations of a Marine Pipeline Close to the Seabed %U https://publications.waset.org/pdf/10004792 %V 115 %X In this paper, using the method of multiple scales, the second sub-harmonic resonance in vortex-induced vibrations (VIV) of a marine pipeline close to the seabed is investigated based on a developed wake oscillator model. The amplitude-frequency equations are also derived. It is found that the oscillation will increase all the time when both discriminants of the amplitude-frequency equations are positive while the oscillation will decay when the discriminants are negative. %P 732 - 735