摘要
对船舶结构气幕减振的模型试验研究作了介绍和讨论。试验模型为铝质、平底、尖首、方尾、开口薄壁型船模。试验在循环水槽中进行。通过 2种吃水、2种喷气孔径、5种喷气流量、2种水流速度的选择组合 ,研究了气幕对船模自由振动、强迫振动和振动阻尼的影响。试验结果表明 ,气幕对船舶结构的强迫振动响应有较大的抑制作用 ,有明显的降噪效果 。
The effect of air injection on vibrati on reduction of hull model is investigat ed experimentally. The model is fabricat ed by aluminum plates, with sharp bow, s quare stern, flat bottom and open deck. The tests were carried out in a circulat i ng flow water tank. The influences of ai r injection on free vibration, on respon se of forced vibration and on damping of the hull model are investigated under s everal selected combinations of 2 draft, 2 pore size, 5 air flow rates, 2 flow f luid velocities. The test results show t hat the response of forced vibration of ship structure is effectively reduced, t he maximum reduction is about 50%, by in troducing air injection. The structure n oise is also reduced at the same time. T he investigation reveals broad prospects of air injection technique in the reduc tion of ship structure vibration.
出处
《中国造船》
EI
CSCD
北大核心
2001年第3期28-33,共6页
Shipbuilding of China
关键词
气幕
减振
船模
试验研究
船舶结构
模型
Air injection, Vibrati on reduction, Ship model, Experimental i nvestigation.
