Transient Response of an Orthotropic Cylindrical Shell to an Underwater Explosive Loading

Abstract

The transient response of an elastic orthotropic cylindrical shell immersed in an acoustic fluid and subjected to a shock loading is investigated in this article. The Sanders thin shell theory is employed in the analysis and the governing equations of the motion for orthotropic cylindrical shell are derived by using Hamilton's principle. The type of loading is the exponentially decaying plane acoustic wave induced by underwater explosion. The reflected-afterflow virtual-source (RAVS) technique is used to simulate the fluid-structure interaction. The numerical analyses are performed to look into the influences of the shell radius and thickness upon the non-dimensional radial velocity, mid-surface strain, 0th mode radial displacement and 1st mode radial velocity of the shells.