Abstract:Long-line culture facility in the sea may move and deform under the effect of current. In order to keep the stability and safety of the facility, it is necessary to carry out the dynamic analysis of the whole structure. Herein, a numerical model based on finite element method was developed to reveal the dynamic response of long-line culture facility to the current. The maximum displacement of float and hanging cage and maximum mooring line force were calculated and analyzed. The simulation results showed that the float rope deformed obviously under the effect of current，and the change of shape corresponded with the practical condition. Furthermore, the maximum displacement of float and hanging cage and the both mooring line force increased with the increase of the current velocity under the same flow direction. The maximum value of displacement of float and hanging cage were 7.6 m and 9.6 m, respectively. The maximum displacement of float and hanging cage and the right mooring line force increased with the increase of the current angle under the same current velocity. But the left mooring line force changed slightly under the different current direction, with the maximum value of 3 780N.
