PARAMETRIC ANALYSIS OF THE SHOCK RESPONSE OF A SYSTEM OF TWO SUBMERGED CO-AXIAL CYLINDRICAL SHELLS COUPLED BY THE INTER-SHELL FLUID

Abstract

A semi-analytical methodology based on classical mathematical physics is used to simulate the shock response of a submerged system consisting of two co-axial cylindrical shells coupled with a fluid filling the inter-shell space. Both the fluid and structural dynamics of the interaction are addressed. The stress-strain states and the hydrodynamic fields are evaluated through analysis of both stress in the shells and pressure fields in the inner hull coupling fluid and compared to previously investigated cases of both a submerged cylindrical shell with and without a rigid core. The main contribution of the thesis is in quantifying the changes in both the stress- strain states and peak pressures evaluated in a parametric study. This is accomplished by varying the inner and outer shell thickness, coupling fluids, outer shell material, and sizes of the inner-hull radius effectively changing the inner-hull fluid space.