基于声固耦合法的环肋壳水下冲击数值仿真试验  

Numerical Simulation Test of Ring-Stiffened Hull Subjected to Underwater Shock Based on Coupled Acoustic-Structural Arithmetic

作　　者：陈高杰[1] 沈晓乐[1] 王树乐[1] 程素秋[1] 

机构地区：[1]中国人民解放军91439部队

出　　处：《兵工自动化》2015年第2期7-10,共4页Ordnance Industry Automation

摘　　要：环肋壳是潜艇耐压壳的常见结构形式之一,水下冲击响应分析对潜艇抗水下爆炸设计具有重要意义。利用声固耦合法对由环肋圆筒和2个半球组成的小型潜艇耐压壳简化模型进行水下冲击数值仿真试验,分析环肋壳在水下爆炸载荷作用下的瞬态动力响应。结果表明:该方法在流固耦合面上会形成局部空化,中截面上迎爆面的塑性应变小于背爆源,可为潜艇耐压壳的优化设计提供参考。The ring-stiffened hull is one of the most common types of submarine pressure hull. Underwater shock response analysis is important for anti-shock design of submarine. The coupled acoustic-structural arithmetic was used to simulate and analyze the transient dynamic response of a submarine pressure hull with a ring-stiffened cylinder and two hemispherical ends, which experienced loading by an underwater explosion （UNDEX）. The results showed that the distribution of local cavitations formed on the fluid-structure interface and the plastic strain at front position was smaller than at back position on the middle section. The numerical method presented in this paper can be used in designing stiffened optimum submersible vehicle.

关 键 词：耐压壳 声固耦合法 水下冲击 数值仿真 

分 类 号：TJ83[兵器科学与技术—武器系统与运用工程]