Whipping responses of double cylindrical shell structures to underwater explosion based on DAA<sub>2</sub>

Liu Yun-long; Wang Yu; Zhang A-man

doi:10.11883/1001-1455(2014)06-0691-10

Volume 34 Issue 6

Dec. 2014

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Liu Yun-long, Wang Yu, Zhang A-man. Whipping responses of double cylindrical shell structures to underwater explosion based on DAA2[J]. Explosion And Shock Waves, 2014, 34(6): 691-700. doi: 10.11883/1001-1455(2014)06-0691-10

Citation:

Liu Yun-long, Wang Yu, Zhang A-man. Whipping responses of double cylindrical shell structures to underwater explosion based on DAA₂[J]. Explosion And Shock Waves, 2014, 34(6): 691-700. doi: 10.11883/1001-1455(2014)06-0691-10

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Whipping responses of double cylindrical shell structures to underwater explosion based on DAA₂

doi: 10.11883/1001-1455(2014)06-0691-10

1.
Wuhan 2nd Ship Design and Research Institute, Wuhan 430205, Hubei, China
2.
College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China
3.
Unit 92857 of PLA, Beijing 100161, China

More Information

Corresponding author: Zhang A-man, zhangaman@hrbeu.edu.cn
Received Date: 2013-04-01
Rev Recd Date: 2013-04-18
Publish Date: 2014-11-25

Abstract

Abstract

Aimed at the whipping response of submarines to underwater explosion, the later approximation of the second－order doubly－asymptotic approximation(DAA₂)based on the wave equation was deduced in time domain, and the inner field problem of the double cylindrical shell structure was solved by combining DAA₂with the acoustic－structure interaction method.Then coupled with the explicit finite element, a fluid－structure interaction method was established for analyzing the underwater shock of submarines.The numerical method established was validated by comparing its results with the analytical ones of a simple case that is about a water－filled elastic spherical shell subjected to a planar step wave.At last, by using the numerical method, the whipping responses of double cylindrical shell structures to underwater explosion were analyzed and the influences of period ratios and explosion distance ratios were explored.
- mechanics of explosion,
- whipping response,
- second-order doubly-asymptotic approximation,
- cylindrical shell structure,
- underwater explosion,
- fluid-structure interaction,
- inner field

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References(18)

References

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