一种舰艇水下爆炸冲击响应的简化分析方法

针对舰船设计初期缺少水下爆炸冲击响应预估方法的问题,提出了一种将DDAM方法和Taylor平板理论相结合的舰艇水下爆炸冲击响应理论模型。该理论模型根据Taylor平板理论将船底简化为自由平板,根据DDAM方法将船体结构各层甲板简化为质量-弹簧系统以模拟各层甲板对底舱的反作用。计算得到了船体结构各层甲板冲击响应,并与缩比模型试验数据进行了对比验证。结果表明这种简化分析方法能够较好模拟舰艇舱段各层甲板在水下爆炸的冲击响应,可为舰艇设计初期的冲击环境预估提供借鉴。

A Simplified Method for Analysis Underwater Shock Response of Warship

According to the lack of methods of predicting underwater shock response at the early design stage, this article present a theoretical model of underwater impact response, which combines the DDAM method and Taylor plate theory. In the theoretical model, ship bottom can be simplified as a free plate according to Taylor plate theory, and the decks of the ship can be simplified as Mass-spring System to simulate the reaction of the decks to the bottom. The impact response to each deck is calculated, and its validation is conformed in contrast to the results of shrink ratio experiments. Therefore, the simplified analysis method can simulate each deck＇s impact response due to underwater explosion, and can provide references for the prediction of shock environment at the early design stage of warship.