Numerical simulation of the influence of thickness of explosion venting plate on the damage and internal load of the cabin

Zhao Pengduo; Huang Song; Yin Jianping; Zhang Lei; Huang Yangyang; Xu Yuxin

doi:10.19693/j.issn.1673-3185.01295

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Chinese Journal of Ship Research > 2019 > 14(3): 58-65, 82. > DOI: 10.19693/j.issn.1673-3185.01295 CSTR: 32390.14.j.issn.1673-3185.01295

Zhao Pengduo, Huang Song, Yin Jianping, Zhang Lei, Huang Yangyang, Xu Yuxin. Numerical simulation of the influence of thickness of explosion venting plate on the damage and internal load of the cabin[J]. Chinese Journal of Ship Research, 2019, 14(3): 58-65, 82. DOI: 10.19693/j.issn.1673-3185.01295

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Numerical simulation of the influence of thickness of explosion venting plate on the damage and internal load of the cabin

1.
Naval Research Academy, Beijing 100161, China
2.
School of Mechatronics Engineering, North University of China, Taiyuan 030051, China
3.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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Received Date: May 19, 2018
Available Online: May 07, 2021

This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Abstract

Abstract

Objectives The influence of the explosion venting plate thickness on the effect of the venting in the new type broadside structure adopted by the DDG 1000 destroyer is studied in this paper.
Methods First, the reliability of the simulation method was verified by experimental data. Then the simulation model of the explosion venting cabin was established using the finite element analysis software. And the principle of thin-plate explosion venting structure was analyzed; the damage failure and load variation under different thin plate thicknesses were studied. Finally, the quadratic function model of specific impulse and deflection changing with the thickness is obtained by function fitting.
Results The results show that the failure of the cabin first occurred at the connection between the thin plate and bulkhead, and gradually extended to the corners and edges of bulkhead; the thinner the plate, the likely an explosion venting opening is to form. When an explosion venting opening forms, the whole thin plate flies out of the cabin; the existence of the explosion venting structure has little effect on the initial shock wave overpressure, but it can effectively reduce the quasi-static pressure and specific impulse in the cabin. The main factors causing the deformation of the protective bulkhead are the initial shock wave and the reflected shock wave, and the main factor causing the ultimate damage of the protective bulkhead is the quasi-static pressure acting for a long time.
Conclusions The research results can provide some reference for the explosion venting design of the ship side cabin structure.
- cabin,
- internal explosion,
- explosion venting,
- shock wave,
- specific impulse

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Numerical simulation of the influence of thickness of explosion venting plate on the damage and internal load of the cabin