基于CEL算法全雷入水冲击建模与仿真  

Modeling and Simulation Analysis of Torpedo’s Water-Entry Impact Based on CEL Algorithm

作　　者：王升 郭君[1] 赵琪[1] 卞敏华 田树红[1] WANG Sheng;GUO Jun;ZHAO Qi;BIAN Min-hua;TIAN Shu-hong(The 705 Research Institute,China Shipbuilding Industry Corporation,Xi’an 710077,China)

机构地区：[1]中国船舶重工集团公司第705研究所

出　　处：《水下无人系统学报》2020年第1期75-80,共6页Journal of Unmanned Undersea Systems

摘　　要：为解决鱼雷入水冲击计算时全雷强度的仿真分析不准确问题,采用耦合欧拉-拉格朗日(CEL)算法进行了全雷入水冲击计算,并依据试验进行模型修正。为提高计算结果的准确性,将材料的线性强化弹塑性本构引入计算模型,并考虑鱼雷各舱段壳体连接结构的连接特性。文中通过对全雷入水冲击计算模型和仿真方法进行研究,得到以下结论:对于连接结构的处理,应充分考虑其连接特性,合理简化连接结构;楔环结构的2个楔环带具有缓冲减振作用。文中研究为助飞鱼雷和空投鱼雷的入水方案提供了依据,为鱼雷和楔环连接体的入水分析提供了参考。To improve the accuracy of the strength simulation of overall torpedo in the torpedo’s water-entry impact calcula-tion,the coupled Eulerian-Lagrangian(CEL)algorithm is used,and the calculation model is modified via experiment.The line-ar reinforced elastic-plastic constitutive model of the material is introduced into the model in order to improve the accuracy of calculation results.The connection characteristics of the connecting structure of torpedo cabin shells are considered to guaran-tee simulation accuracy.Conclusions are drawn that the connection characteristics should be fully considered in treatment of the connecting structure and the connecting structure should be rationally simplified,and the two wedge-ring bands of the wedge-ring structure have the functions of buffering and vibration reduction.This study may be helpful for the designs of wa-ter-entry schemes of rocket-assisted torpedo and air-dropped torpedo,and may provide a reference for the analyses of torpedo water-entry impact and wedge-ring connecting structure.

关 键 词：鱼雷 入水冲击 耦合欧拉-拉格朗日方法 楔环连接 

分 类 号：TJ630.1[兵器科学与技术—武器系统与运用工程] TB115[理学—数学]