Smoothed Particle Hydrodynamics Simulation of the Submarine Structure Subjected to a Contact Underwater Explosion
Z. Zhang, L. Sun, X. Yao, X. Cao
College of Shipbuilding and Ocean Engineering, Harbin Engineering University, 150001 Harbin, China
Keywords: damage characteristics, contact underwater explosion, cylindrical shell, SPH method, water interlayer
Pages: 502–508
Abstract
In this paper, a modified smoothed particle hydrodynamics (SPH) formula is deduced to solve the problem of interfaces with a high density ratio. Simplified SPH models for single and double cylindrical shells (abbreviated as single-hull and double-hull models, respectively) are established to study shock wave propagation and to conduct the damage analysis. The SPH results for the single-hull model are verified by AUTODYN. In addition, the damage analysis indicates that the single-hull model is damaged more severely than the double-hull model. The inner shell in the double-hull model is protected by a water interlayer.
DOI: http://dx.doi.org/10.1134/S0010508215040164
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