Destabilization of Cylindrical Shells Coupling Effect of Local Impact Load and Circumferential Pressure

Underwater vehicles have a great deal of tactical significance in the future sea warfare, and their structural forms are mostly cylindrical shells: underwater vehicles. It may be attacked by underwater weapons. Its payload forms include hydrostatic pressure and localized impact. This article uses finite element analysis software ABAQUS to study the dynamic response of thin-walled cylindrical shells under local impact loading and circumferential pressure effect of cylindrical shell under coupling effect of pressure and local shock. Study shows that under impact load alone, the time of action, the maximum deflection at the point of application of the timing is linear with the peak value of the impact load. When the impact load peak is less than 40MPa, the coupling 30% reduction in critical collapse pressure of columnar crucibles due to cooperative use than cumulative ones, and impact load crest satisfy a certain function form and fit the results of this study to get the functional relationship.