Prediction of mooring line damping in time domain analysis
Viscous damping due to drag on deepwater catenary mooring line is significantly affected by a floating platform.The absorption of energy by a mooring line from the floating platform as a result of its oscillation is applied to calculate the viscous damping of the mooring line.The mooring line and seabed interaction is based on the hypothesis of rigid seabed.The fluid drag force and inertia force on the mooring line are calculated according to the Morrison formula.Under the hydrostatic condition,the mooring line non-linear dynamic analysis is executed in the time-domain based on the finite element method.Bi-harmonic floating platform oscillations are specified,meanwhile they represent the wave drift oscillation and the wave frequency oscillation.The maximum tension in the mooring line and the viscous damping are obtained from the results.
deepwater eatenary mooring system viscous damping absorbed energy non-linear dynamic analysis
QIAO Dong-sheng OU Jin-ping
School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;School of CiVil an
国内会议
呼和浩特
英文
229-234
2009-08-05（万方平台首次上网日期，不代表论文的发表时间）