1.State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240,China；2.China Ship Development and Design Center, Wuhan 430064,China
Abstract：A method considering both the shock wave and jet load is proposed for the ship underwater near-field explosion. Firstly, the numerical simulation of near-field underwater explosion bubble motion process is being carried out to establish the jet impact model, and then the jet load is simplified. Jet load is automatically added to the fluid-structure coupling simulation model after the shock wave phase to form a complete calculation process of the underwater near-field explosion process. Finally, a shell frame structure finite element model simulated by the MSC.Dytran software is established. This numerical example validates the feasibility of the method. The proposed method considering both the shock wave load and jet load at the same time is a more realistic simulation of the underwater near-field explosion process.
2014, Vol. 33 
