A study of improvement on ultimate bearing capacity of a box girder ship subjected to inner explosion

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (20) : 50-55.

WU Shaobo,ZHANG Shilian,YU Haiyang,LI Cong

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Abstract

The ultimate bearing capacity of a ship structure subjected to inner explosion is important both in theory and in practice.In this paper, the ultimate bearing capacities of a general structure ship and a box girder structure ship were calculated, with weight increment due to the box girders taken into consideration.Then the effect of the box girder structure in improving structural ultimate bearing capacity was analyzed based on comparison.Simulations of structural responses of the ship subjected to cabin inner explosion were conducted in MSC-DYTRAN, while the calculation of the ultimate bearing capacities was performed through ABUQUS, using the quasi static loading method.The results indicate that the box girder structure can significantly improve the ultimate bearing capacity of ships under inner explosion, and the effects may vary with the explosion position.

Key words

inner explosion / box girder structure / common structure / quasi static method / ultimate bearing capacity

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WU Shaobo,ZHANG Shilian,YU Haiyang,LI Cong. A study of improvement on ultimate bearing capacity of a box girder ship subjected to inner explosion[J]. Journal of Vibration and Shock, 2018, 37(20): 50-55

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