| Dynamics of vertical pipe in deep-ocean mining system |
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| 作者姓名： | 禹宏云 刘少军 |
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| 作者单位： | School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | Project （DY105-03-02-02） supported by the Deep-0cean Technology Development Item of China |
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| 摘 要： | A 3-D geometrical nonlinear model for the entire lift system of 1000-m sea trial system of China Ocean Mineral Resources R＆D Association was established with finite element method. The model was utilized to analyze the dynamic characteristics of the vertical pipe under the influence of moving velocity, current direction and wave. The simulation results show that the axial stress is dominant on the vertical pipe, its maximum is located at the pipe top, all stresses are much less than the allowable value of the vertical pipe and joint; the heave motion leads to violent fluctuation of the force and stress, but a period of 8 s is not likely to resonate the present pipe; against the current, 0.50 m/s is the suggested moving velocity of the ship and miner, while along the current, the moving velocity can be slightly higher than 0.75 m/s.
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| 关 键 词： | 深海采矿 动力学 垂直管道 有限元 |
| 收稿时间： | 24 November 2006 |
| 修稿时间： | 2006-11-242007-01-27 |
Dynamics of vertical pipe in deep-ocean mining system |
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| Yu Hong-yun,and Liu Shao-jun.Dynamics of vertical pipe in deep-ocean mining system[J].Journal of Central South University of Technology,2007,14(4):552-556. |
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| Authors: | Yu Hong-yun and Liu Shao-jun |
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| Affiliation: | School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
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| Abstract: | A 3-D geometrical nonlinear model for the entire lift system of 1000-m sea trial system of China Ocean Mineral Resources R&D
Association was established with finite element method. The model was utilized to analyze the dynamic characteristics of the
vertical pipe under the influence of moving velocity, current direction and wave. The simulation results show that the axial
stress is dominant on the vertical pipe, its maximum is located at the pipe top, all stresses are much less than the allowable
value of the vertical pipe and joint; the heave motion leads to violent fluctuation of the force and stress, but a period
of 8 s is not likely to resonate the present pipe; against the current, 0.50 m/s is the suggested moving velocity of the ship
and miner, while along the current, the moving velocity can be slightly higher than 0.75 m/s.
Foundation item: Project (DY105-03-02-02) supported by the Deep-Ocean Technology Development Item of China |
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| Keywords: | deep-ocean mining dynamics vertical pipe finite element method geometrical nonlinearity |
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