Doubly Asymptotic Approximations for Submerged Structures With Internal Fluid Volumes: Evaluation

The accuracy of the doubly asymptotic approximations formulated in the previous companion paper is examined through the comparison of DAA and exact transient response histories for a fluid-filled, submerged spherical shell excited by an incident plane step-wave. The numerical results indicate that second-order DAAs are satisfactory for problems of this type.