A numerical method for double-plated structure completely filled with liquid subjected to underwater explosion
| Autor: | Guo-zhen Liu, Jun Wang, Pan Jianqiang, Hai-bin Mao, Jian-hu Liu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Shock wave
Engineering business.industry Mechanical Engineering Numerical analysis Shell (structure) Ocean Engineering 02 engineering and technology Mechanics Structural engineering 01 natural sciences Finite element method 010305 fluids & plasmas Physics::Fluid Dynamics 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Cavitation 0103 physical sciences Fluid–structure interaction General Materials Science Underwater business Underwater explosion |
| Zdroj: | Marine Structures. 53:164-180 |
| ISSN: | 0951-8339 |
| DOI: | 10.1016/j.marstruc.2017.02.004 |
| Popis: | The double-plated structure is extensively applied to the surface ships and submarines. Between the two plates there always exists liquid such as water or oil. When it is exposed to the attack by underwater weapon, the shock wave firstly hits the outer plates, and then it is transmitted into the internal liquid, subsequently to the inner plates. The mechanism in this process is so complex that has been a troublesome problem for a long time. In this paper, a numerical method is developed to solve this problem. The second-order doubly asymptotic approximations (DAA) is used to analyze the external fluid-structure interaction (FSI) effect for the outer fluid field with the outer plates, and cavitating acoustic finite element (CAFE) is used to model the internal FSI effect. Results obtained by this approach show good agreement with results of the excitation problem of 3D fluid-filled shell by a plane step wave. Last, two experiments are implemented to validate the method. From the comparative results, it shows that the simulation results coincide well with tests. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect