Fluid-solid Coupled Dynamical Analysis of Deep-ocean Mining System

摘要

system is studied based on nonlinear finite element method with fluidsolid coupling model using. Finite element software MSC.MARC 2005 is adopted to calculate displacements, support constrained forces and stresses of the mining system. Effects of the towing velocity of the mining ship and the mining machine, wave period and nodule mass stored in the buffer on dynamic responses of the mining system are analyzed in order to provide scientific basis for optimal design of the deep-ocean mining system. Research results show that for safety and efficiency of the mining operation, the velocity of the mining machine and the nodule mass should be limited within appropriate ranges (about 0.3-0.5m/s and 2000-4000kg) and the countercurrent mining operation should be avoided in the case of smaller wave period.