High-speed Penetrator And The Combined Effects Of The Underwater Blast Wave On The Deck Structure

Applying the numerical analysis method, this thesis has researched the unite action of high-velocity penetrator and underwater blast wave to warship shipboard.First, based on the finite element method of numerical analysis, the thesis calculated 24 kinds of operating conditions of the impacting process for high-velocity penetrator to warship shipboard, analysed the damage deformation of warship shipboard, and presented the relations between initial velocity and residual velocity for high-velocity penetrator. Then, compared with even target plates, the thesis analysed the restraining effect of framework to warship shipboard under the load of underwater blast wave. At last, based on the full restart analysis function of the software ANSYS/LS-DYNA, the thesis gave a simulation analysis of the unite action process for high-velocity penetrator and underwater blast wave to warship shipboard. The results showed that the plasticity deformation area of shipboard was larger than the area in the condition of single load. The framework of shipboard has a big plasticity deformation after the action of underwater blast wave. The rigidity of warship shipboard is improved because of the framework, the local displacement of warship shipboard was restrained and the deformation of penetration hole for shipboard was not distinctness.