船舶撞击作用下系泊多浮体耦合系统的运动响应分析

利用AQWA和Workbench软件模拟船舶撞击多浮体耦合系统得到其运动响应和动力响应。模拟情况分别为船舶以自由漂浮状态在4种不同的波浪和水流环境共同作用下及在静水环境下,以4种不同航速正向撞击多浮体耦合系统。计算结果显示,在自由撞击时,波浪对浮体横移量的影响较小,而海流对浮体横移量的影响较大。在不同航速下,随着船舶速度的增大,浮体链将船舶拦停时浮筒的横移量也随之增大。浮体间的连接缆绳和迎浪侧的系泊缆绳张力较大,背浪侧系泊缆绳张力非常小。将计算结果与试验结果进行对比,验证了全耦合时域分析方法在撞击载荷下分析问题的可行性,为建立海上拦阻系统提供参考依据。

Motion response analysis of mooring multi-floating coupling system under ship impact

The AQWA and Workbench sofware are used to simulate the ship impact against multi floating coupled system to obtain its motion response and dynamic response.The simulations are as follows:ship impacting against multifloating coupled system under the combined action of four different waves and currents environments,also in hydrostatic environment,the ship impacting on the multi floating coupled system with four different speeds.The results show that the influence of wave on the transverse displacement of floating body is small,while the influence of current on the transverse displacement of floating body is large.At different speeds,the transverse displacement of buoy increases with the increase of ship speed when the buoy chain stops the ship and the tensions of the mooring rope between the floating bodies and the font side are larger,while the tension on the back side is very small.Finally,the numerical simulation results are compared with the existing experimental results to verify the correctness of the fully coupled time-domain analysis method and provide reference for the study of establishing the intercept system in the sea.