In this paper, based on the Morison equation and FEM, we studied the dynamic responses of the floating cage system in currents and waves. The nets are modeled by truss elements, the current and wave forces are calculated based on the Morison equation at each time step. The floater is modeled by beam elements, and the hydrodynamic forces from wave and current are also calculated by Morison equations. The sinker is modeled by adding a circular mass bar on the bottom of the whole structure. The effects of the flexibility on the dynamic responses of the floater are investigated by studying the structural deformations of the floater. The dynamic response of the system in different current and wave conditions are studied as well.

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