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Volume 30 Issue 3
Jul  2022
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2022  >  30(3): 354-363
LI Hai-long, WANG Bo, DING Song, ZHANG Zhi-fan. Study on the Protection Mechanisms of a Polyurea Coating Subjected to Shock Waves and Penetrators[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 354-363. doi: 10.11993/j.issn.2096-3920.2022.03.011
Citation: LI Hai-long, WANG Bo, DING Song, ZHANG Zhi-fan. Study on the Protection Mechanisms of a Polyurea Coating Subjected to Shock Waves and Penetrators[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 354-363. doi: 10.11993/j.issn.2096-3920.2022.03.011
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Study on the Protection Mechanisms of a Polyurea Coating Subjected to Shock Waves and Penetrators

doi: 10.11993/j.issn.2096-3920.2022.03.011

  • 1. School of Naval Engineering, Dalian University of Technology, Dalian 116024, China;

  • 2. The 703 Research Institute, China State Shipbuilding Corporation Limited, Harbin 150078, China;

  • 3. China Ship Research Institute, Beijing 100101, China;

  • 4. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • Received Date: 2022-01-25
    Available Online: 2022-07-18
    Abstract
  • With the widespread use of shaped-charge warheads in underwater weapons, it is of great significance to study the anti-explosion and anti-penetration performance of modern warships. In this study, an underwater explosion model was developed using the AUTODYN finite element software to study the anti-explosion and anti-penetration performance of polyurea protection materials. The protective effects of polyurea coatings in different positions are discussed according to the surface density theory. The results for crevasse, deflection, energy absorption, and velocity reduction characteristics are analyzed comparatively. The optimal position of a polyurea coating is determined to be inside a sandwich of steel plate-polyurea-steel plate. This type of composite structure is optimized. The results demonstrate that with an increase in the thickness of polyuria, its protective effects do not improve and the optimal ratio of steel plate-polyurea-steel plate is 2:10:2. These results provide a theoretical basis and numerical support for ship protection design.

     

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