Numerical Simulation of Hull Grillage Response Under Blast Loading Based on the RKDG Method

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (13) : 60-65.

YU Fulin GUO Jun YAO Xiongliang REN Shaofei

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Abstract

In order to simulate the characteristics of far field air explosion shock load, the discretizations of Euler equations were solved by RKDG method. The numerical model was established and far field air explosion shock wave load characteristics were simulated. The results were compared with the empirical formula. The density and pressure distribution of high pressure shock wave with large discontinuity were simulated with Fortran program. Combined with LS-DYNA, impulse responses of hull plates under shock load are simulated. The results indicate that the plastic deformed shape profiles along the stiffener direction, and the plate shows local dishing deformation, and the response is inversely proportional to the distance from the explosion center.

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YU Fulin GUO Jun YAO Xiongliang REN Shaofei. Numerical Simulation of Hull Grillage Response Under Blast Loading Based on the RKDG Method[J]. Journal of Vibration and Shock, 2015, 34(13): 60-65

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