Abstract
As a solution to the breaking of pipeline under high axial force, carbon fiber composite pipe with low density and high intensity is applied to deep-sea mining transporting system. Based on the fact that the transporting pipe is under the forces of gravity, inner liquid, buoyancy as well as hydrodynamic force, geometric nonlinear finite element theory has been applied to analyzing the transporting system. Conclusions can be drawn as follows. Under the interaction of waves and currents, node forces FX and FZ acted by the transporting pipe on the mining vehicle are less than 2 kN, which indicates that waves and currents have little influence on the spatial shape of the transporting pipe and the mining vehicle movement. On the other hand, the horizontal force acting on the mining ship could be as large as 106 830 N, which has great influence on the mining system.
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