In 2019, commercial deep-sea mining has begun off the coast of Papua New Guinea.
Companies in China, the UK, Belgium, Germany, France, and Japan have won contracts for exploration of deep-sea resources for three different mineral resources: seafloor massive sulphides, ferromanganese crusts, and poly metallic nodules. Therefore, the development of marine mineral resources has become the strategic goal of all countries in the world.
Rich marine mineral resources will become irreplaceable resources for human development and utilization. The huge potential of marine mineral resources has been confirmed by many researchers, and deep ocean mining is being pushed to the next frontier of resource development. The development of renewable energy and the application of high and new technology need the support of new infrastructure that will consume a different mix of minerals from current applications, including not only “critical” metals such as rare earths, but also vast amounts of common commodities such as copper, steel, and cement. The simulation results show that the attaching DVAs can effectively reduce the axial stress, and longitudinal displacement at certain positions of the lifting pipe.
Orcaflex water wave 1st order software#
In this paper, MATLAB and Orcaflex software are used to verify the mathematical model.
Analytical and numerical simulations have been formulated to illustrate variation rule of longitudinal vibration and axial stress at the position of pump and buffer for the lifting subsystem to determine the dynamic vibration absorber parameters. A comprehensive finite element model for the deep-sea mining system by the OrcaFlex is developed to explore the influences of buffer mass and sailing velocity on the deflection angle and the axial load and stress of the lifting pipe. Considering the geometrical features of the prototype, this paper establishes the physical model, mathematical model, and simulation model of the lifting subsystem. Effects of vibration absorbers on the lifting pipe in deep-sea mining have been attracting more and more attention in the recent three decades however, there are very few reports about the influence of ocean current on the pipe vibration in the literature.
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