| A Time Domain Computation Method for Dynamic Behavior of Mooring System |
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| 作者单位： | Liu Yingzhong，Miao Guoping，Li Yile，Liu Ziyuan Liu Hedong，Huang Qingyu and Ma Qingjiu
1 Professor，School of Naval Architecture and Ocean Engineering，Shanghai Jiao Tong University，Shanghai 200030
2 Assistant，School of Naval Architecture and Ocean Engineering，Shanghai Jiao Tong University，Shanghai 200030
3 Ph. D. Candidate，Dept. of Naval Architecture and Ocean Engineering，University of Michigan，Ann Arbor，USA
4 Postdoctor，Institute of Mechanics，China Academy of Sciences，Beijing 100080
5 Senior Engineer，China Offshore Oil Bohai Corporation，Tianjin 300452 |
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| 摘 要： | A quasi-steady time domain method is developed for the prediction of dynamic behavior of amooring system under the environmental disturbances,such as regular or irregular waves,winds and cur-rents.The mooring forces are obtained in a static sense at each instant.The dynamic feature of the moor-ing cables can be obtained by incorporating the extended 3-D lumped-mass method with the known shipmotion history.Some nonlinear effects,such as the influence of the instantaneous change of the wettedhull surface on the hydrostatic restoring forces and Froude-Krylov forces,are included.Thecomputational results show a satisfactory agreement with the experimental ones.
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A Time Domain Computation Method for Dynamic Behavior of Mooring System |
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| Abstract: | A quasi-steady time domain method is developed for the prediction of dynamic behavior of a mooring system under the environmental disturbances, such as regular or irregular waves, winds and currents. The mooring forces are obtained in a static sense at each instant. The dynamic feature of the mooring cables can be obtained by incorporating the extended 3-D lumped-mass method with the known ship motion history. Some nonlinear effects, such as the influence of the instantaneous change of the wetted hull surface on the hydrostatic restoring forces and Froude- Krylov forces, are included. The computational results show a satisfactory agreement with the experimental ones. |
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| Keywords: | mooring systems dynamic characteristics time domain analysis |
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