Modeling and Simulation Analysis of Torpedo’s Water-Entry Impact Based on CEL Algorithm
-
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。
-
关键词:
- 鱼雷 /
- 入水冲击 /
- 耦合欧拉-拉格朗日方法 /
- 楔环连接
Abstract: To improve the accuracy of the strength simulation of overall torpedo in the torpedo’s water-entry impact calculation, the coupled Eulerian-Lagrangian(CEL) algorithm is used, and the calculation model is modified via experiment. The linear 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 guarantee 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 water-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. -
[1] 徐宣志. 鱼雷力学[M]. 北京: 国防工业出版社, 1992. [2] 王永虎, 石秀华. 空投鱼雷斜入水冲击动力建模及仿真分析[J]. 计算机仿真, 2009, 26(1): 46-49.Wang Yong-hu, Shi Xiu-hua. Modeling and Simulation Analysis of Oblique Water-entry Impact Dynamics of Air-dropped Torpedo[J]. Computer Simulation, 2009, 26(1): 46-49. [3] 徐新栋, 李建辰, 曹小娟. 鱼雷缓冲头帽入水冲击性能研究[J]. 鱼雷技术, 2012, 20(3): 161-165.Xu Xin-dong, Li Jian-chen, Cao Xiao-juan. Water-Entry Impact Performance of Torpedo’s Cushion Nose Cap[J]. Torpedo Technology, 2012, 20(3): 161-165. [4] 张岳青, 徐绯, 李建辰, 等. 结构物入水冲击表面压力的模型研究及应用[J]. 机械强度, 2017, 39(1): 33-39.Zhang Yue-qing, Xu Fei, Li Jian-chen, et al. Model Study and Application on Surface Pressure Measurement of Structure Water Entry[J]. Journal of Mechanical Strength, 2017, 39(1): 33-39. [5] 李成进, 何光进. 高速入水弹体结构冲击仿真研究[J]. 舰船电子工程, 2011, 31(5): 116-118.Li Cheng-jin, He Guang-jin. Water Entry Shock Emulation of High Speed Projectile Body Structure[J]. Ship Electronic Engineering, 2011, 31(5): 116-118. [6] 杨衡. 鱼雷入水及其近场水下爆炸对舰船结构毁伤特性研究[D]. 哈尔滨: 哈尔滨工程大学, 2017. [7] 潘光, 杨悝. 空投鱼雷入水载荷[J]. 爆炸与冲击, 2014, 34(5): 521-526.Pan Guang, Yang Kui. Impact Force Encountered by Water-entry Airborne Torpedo[J]. Explosion and Shock Waves, 2014, 34(5): 521-526. [8] Seddon C M, Moatamedi M. Review of Water Entry with Applications to Aerospace Structures[J]. International Journal of Impact Engineering, 2006, 32(7): 1045-1067. [9] 潘光, 韦刚, 杜晓旭. 空投水雷入水及水下弹道的设计与仿真[J]. 火力指挥与控制, 2007, 32(3): 85-88.Pan Guang, Wei Gang, Du Xiao-xu. The Design and Sim-ulation of Water Entry and Underwater Trajectory for Airdropped Mine[J]. Fire Control and Command Control, 2007, 32(3): 85-88. [10] 宋保维, 杜晓旭, 梦锐. 空投水雷入水冲击力仿真[J]. 鱼雷技术, 2008, 16(3): 6-8.Song Bao-wei, Du Xiao-xu, Meng Rui. Numerical Simulation of Water-entry Impact Force for Air-launched Mine[J]. Torpedo Technology, 2008, 16(3): 6-8. [11] 王永虎, 石秀华, 王鹏. 雷弹入水冲击动态缓冲性能分析[J]. 西北工业大学学报, 2009, 27(5): 707-711.Wang Yong-hu, Shi Xiu-hua, Wang-Peng. Exploring Analysis of Dynamic Cushioning Properties of Water-entry Missile’s Shock Mitigator[J]. Journal of Northwestern Poly technical University, 2009, 27(5): 707-711.
点击查看大图
计量
- 文章访问数: 400
- HTML全文浏览量: 1
- PDF下载量: 135
- 被引次数: 0