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。
The AQWA and Workbench software 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 multi-floating 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 front 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.
2020,42(6): 9-13 收稿日期:2019-07-12
DOI:10.3404/j.issn.1672-7649.2020.06.002
分类号:TP391.9
作者简介:李鸿(1969-),女,博士,教授,研究方向为工程结构强度分析
参考文献:
[1] 刁景华, 李艳茹, 王立强, 等. 港口安全防护拦阻系统的研究及应用[J]. 港口科技, 2016(4):18-22
[2] 刘昌凤, 滕斌, 张俊生, 等. 码头前系泊船舶撞击速度研究[J]. 水道港口, 2011, 32(3)
[3] 刘文玺, 周其斗, 张纬康, 等. 浮体与系泊系统的耦合动力分析[J]. 船舶力学, 2014(8)
[4] 高峰, 沈文君, 李焱, 等. 船舶系泊动力分析数值模拟计算研究[J]. 水道港口, 2015, 36(6)
[5] 高峰, 李焱, 沈文君, 等. 风浪流共同作用下的多浮体系泊性能试验研究[J]. 水道港口, 2017, 38(6):556-560
[6] 刘俊谊, 陈徐均, 吴广怀, 等. 船舶撞击高架拦阻系统后的位移计算及与试验结果的比较[J]. 船舶力学, 2016, 20(8)
[7] 王贝壳. 非通航孔桥墩自适应拦截网防撞装置实船拦截试验与水动力计算[J]. 海洋工程, 2017(01):94-100
[8] 于文太. 多浮筒悬链线系泊系统计算软件的开发及试验[J]. 船舶工程, 2017(11):88-92
[9] 王鑫. 系泊浮体链式防撞系统水动力特性和防撞性能试验研究[D]. 大连:大连理工大学, 2013.
[10] 李鸿, 张斐斐, 秦超, 等. 系泊多浮体耦合系统水动力特性数值分析[J]. 舰船科学技术, 2019, 41(3):8-12