Analysis of Underground Protective Structures

Abstract

A procedure is presented for analyzing underground protective structures subject to conventional weapons effects. A radiation damping term is added to a simple mass‐resistance system to include structure‐medium interaction effects. This methodology, which is based on a decoupling procedure for finite element computations, is applied to the deformation and the rigid body response of a single‐degree‐offreedom model. Numerical examples are given for both applications. The deformation response is shown to be in good agreement with finite element computations that have been previously shown to compare well with experimental data.