The Analysis And Research Of Warship Structure Damage Under Nuclear Blast Load

Warship is more and more important in modern warfare. The new type of warships constantly joined the ranks of the Navy in recent years. It is very important to understand the damage condition of the structure in the circumstance of nuclear explosion if the nuclear war occurred. The nuclear explosion has the characteristic of high destructive effect, multi-unknown, bigger damage to the structure of ships. It can threaten the viability of the ships. The shockwave can make surface ship hull structure above the water surface occur deformation, concave, collapse and fracture, such as the open-air deck, superstructure and masts. Superstructure is usually the control and command center of ship. It is the important place for the crew’s activities in addition to installing numerous precision instruments and equipment. So it is more urgent to research the structure deformation of warship superstructure under the nuclear blast load.The main contents of this study:(1)The background and current situation of study that the air non-contact explosion damage to the ship at home and abroad is introduced;(2) The method that the finite element solves the problem of structural strength is expounded;(3) The finite element model of warship superstructure is built by using the finite element software MSC. Patran, and the three typical loading conditions are loaded using the loading method of nuclear explosion impulsive load in GJB;(4) The model is calculated using the finite element software MSC. Nastran to get the damage results of the ship superstructure in this three conditions;(5) Structural deformation condition is analyzed by selecting the typical location from the results, the damage condition of the warship superstructure is evaluated based on the HJB, and this paper can provide reference and recommendations for the design and planning of warship superstructure.