The evaluation method of total damage to ship in underwater explosion |
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| Authors: | A-man Zhang Ling-yu Zeng Xiao-da Cheng Shi-ping Wang Yu Chen |
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| Institution: | aCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China;bDepartment of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK;cChina Ship Design and Research Center, Wuhan 430064, China |
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| Abstract: | Whipping response will happen when a ship is subjected to underwater explosion bubble load. In that condition, the hull would be broken, and even the survivability will be completely lost. A calculation method on the dynamic bending moment of bubble has been put forward in this paper to evaluate the impact of underwater explosion bubble load on the longitudinal strength of surface ships. Meanwhile the prediction equation of bubble dynamic bending moment has been concluded with the results of numerical simulation. With wave effect taken into consideration, the evaluation method of the total damage of a ship has been established. The precision of this evaluation method has been proved through the comparison with calculation results. In order to verify the validity of the calculation results, experimental data of real ship explosion is applied. Prediction equation and evaluation method proposed in this paper are to be used in ship structure design, especially in the preliminary prediction of the ultimate withstanding capability of underwater explosion damage for the integrated ship in preliminary design phase. |
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| Keywords: | Ship hull Structure Underwater explosion Bubble dynamic bending moment |
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