浮动冲击平台对应实船冲击环境判别分析

由于浮动冲击平台自身结构与实船存在差异,使其在水下爆炸过程中提供给设备的冲击环境较难与实船建立对应关系。为使浮动冲击平台不同工况所得设备抗冲击能力能反应不同排水量舰船及舰船不同位置的设备抗冲击性能,对4艘不同排水量舰船在水中爆炸冲击波作用下垂向滤波效应进行研究;对不同工况下浮动冲击平台与设备连接处的冲击谱参数用Fisher方法与舰船内外底谱参数判别分析,并通过数值仿真验证判别结果的合理性。结果表明,排水量较大船体滤波效应较明显,无上层建筑一甲板较船体内部二、三甲板冲击环境恶劣。通过多元统计分析判别方法建立的实船与浮动冲击平台考核设备冲击环境对应关系,对舰船设备考核具有一定指导意义。

Discriminant analysis of the shock environment of floating shock platform corresponding to the real ship

The structural difference between floating shock platform and real ship makes it difficult to establish the corresponding relations of shock environment between the two. In order to make the device impact ability getting from the floating shock platform at different working conditions can react to the impact resistance of ship equipment from different positions and different displacement, the vertical filtering effect of four different displacement ships subjecting to the underwater explosion shock wave is studied firstly. Then, the discriminant analysis of spectral parameters where floating shock platform connects to the device and the inside and outside bottom of the ship is analyzed using the Fisher method. The rationality of the method is validated finally. The results show that filtering effect is more obvious for the larger displacement hull. The shock environment of deck 1 with no superstructure is more serious than deck 2 and deck 3. The Discrimination method of multivariate statistical analysis can establish a correspondence for shock environment of equipment assessment between real ship and floating shock platform. The result has a certain guiding significance for the assessment of ship equipment in engineering applications.