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Volume 28 Issue 1
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2020  >  28(1): 075-80
WANG Sheng, GUO Jun, ZHAO Qi, BIAN Min-hua, TIAN Shu-hong. Modeling and Simulation Analysis of Torpedo’s Water-Entry Impact Based on CEL Algorithm[J]. Journal of Unmanned Undersea Systems, 2020, 28(1): 075-80. doi: 10.11993/j.issn.2096-3920.2020.01.011
Citation: WANG Sheng, GUO Jun, ZHAO Qi, BIAN Min-hua, TIAN Shu-hong. Modeling and Simulation Analysis of Torpedo’s Water-Entry Impact Based on CEL Algorithm[J]. Journal of Unmanned Undersea Systems, 2020, 28(1): 075-80. doi: 10.11993/j.issn.2096-3920.2020.01.011
shu

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

doi: 10.11993/j.issn.2096-3920.2020.01.011
  • Received Date: 2019-05-28
  • Rev Recd Date: 2019-06-26
  • Publish Date: 2020-02-29
    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.

     

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