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Articulated Lifting System Modeling Based on Dynamics of Flexible Multi-Body Systems

Articulated Lifting System Modeling Based on Dynamics of Flexible Multi-Body Systems
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摘要 In lifting sub-system of deep-sea mining system, spherical joint is used to connect lifting pipes to replace fixed joint. Based on Dynamics of Flexible Multi-body systems, the mechanics model of articulated lifting system is established. Under the four-grade and six-grade oceanic condition, dynamic responses of lifting system are simulated and experiment verified. The simulation results are consistent with experimental ones. The maximum moment of flexion is 322 kN-m on the first pipe under six-grade sea condition. It is seen that the articulated connection can reduce the moment of flexion. The bending deformation of pipe center is researched, and the maximum is 0. 000479 m on the first pipe. Deformation has a little effect on the motion of system. It is feasible to analyze articulated lifting system by applying the theory of flexible multi-body dynamics. The articulated lifting system is obviously better than the fixed one. In lifting sub-system of deep-sea mining system, spherical joint is used to connect lifting pipes to replace fixed joint. Based on Dynamics of Flexible Multi-body systems, the mechanics model of articulated lifting system is established. Under the four-grade and six-grade oceanic condition, dynamic responses of lifting system are simulated and experiment verified. The simulation results are consistent with experimental ones. The maximum moment of flexion is 322 kN-m on the first pipe under six-grade sea condition. It is seen that the articulated connection can reduce the moment of flexion. The bending deformation of pipe center is researched, and the maximum is 0. 000479 m on the first pipe. Deformation has a little effect on the motion of system. It is feasible to analyze articulated lifting system by applying the theory of flexible multi-body dynamics. The articulated lifting system is obviously better than the fixed one.
出处 《China Ocean Engineering》 SCIE EI 2007年第4期715-722,共8页 中国海洋工程(英文版)
基金 This research project was financially supported by China Ocean Mineral Resources R&D Association(Grant No.DY105-03-02-17) Ph.D.Programs Foundation of Ministry of Education of China(Grant No.20060008025)
关键词 articulated lifting system flexible multi-body dynamics bending deformation dynamics modeling articulated lifting system flexible multi-body dynamics bending deformation dynamics modeling
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