中文摘要：

养殖网箱系统在海中除承受静载荷以外还受到波流等动载荷的作用,为确保安全有必要对网箱系统进行动力分析。为此提出一种基于有限元原理的养殖网箱系统动力分析方法,分别对圆形重力式网箱在水流、波浪以及波流联合作用下的网衣变形与锚绳受力进行了数值模拟,并与实验结果进行了比较分析。结果表明：该方法具有解的稳定性,计算值与实验值比较吻合,较好地反映了网箱系统在波流场中的动力响应特性。

英文摘要：

The fish cage in sea is affected by the hydrostatic effects and hydrodynamic effects. To ensure the safety of net cage system,it is necessary to carry out transient dynamic analysis. Therefore a finite element method is employed to determine the dynamical response of the fish cage. The fish net deformation and mooring line force are simulated for the cage in current and wave,and then the simulation results are compared with the experimental results. The results show that the method has good accuracy as compared with the measured results of physical modeling test in the wave-current flume. The computer simulation reveals the dynamical response characteristics of the fish cage in current and wave well.