The model experimental scheme of the global strength of warship subjected to underwater explosion

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (6) : 175-180.

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The model experimental scheme of the global strength of warship subjected to underwater explosion

zhang hai-peng;YUE Yong-wei，SU Luo-qing，ZHANG A-man, YAO Xiong-liang

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Abstract

the similarity law is considered on the first shock wave and the bubble pulsation of underwater explosion in the free field, and it is studied to accurately predict the longitudinal strength of the real ship through distortion model in underwater explosion experiments of the large scale model. The distortion model is created by carrying out a series of change on the plate after considering the manufacturing technology of the scale model. Suitable scaled ratio and distortion coefficient is chosen after numerical simulation of four scale model experiment schemes of the warship and the sum-up of the prediction deviation of the section moment on the model. The section moment of the experimental model is predicted accurately within the engineering precision range and the manufacturing technology and the economic is satisfactorily accepted when the scaled ratio is 1/4 and the distortion coefficient is 3 of the scale model, then the final experimental scheme is chosen. And this paper aims to supply some references to engineering application of the underwater explosion experiments of the large scale model.

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underwater explosion / experimental schematic design / the longitudinal strength / distortion model

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zhang hai-peng;YUE Yong-wei;SU Luo-qing;ZHANG A-man;YAO Xiong-liang. The model experimental scheme of the global strength of warship subjected to underwater explosion[J]. Journal of Vibration and Shock, 2012, 31(6): 175-180