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RESEARCH PAPERS

Selection of Equations-of-State for Blast Attenuation

[+] Author and Article Information
P. Lieberman

Engineering Mechanics Division, IIT Research Institute, Chicago, Ill.

J. Appl. Mech 38(1), 253-261 (Mar 01, 1971) (9 pages) doi:10.1115/1.3408751 History: Received August 08, 1968; Revised July 16, 1969; Online July 12, 2010

Abstract

Blast shield materials are described by idealized equations-of-state in both one-dimensional loading and one-dimensional unloading. A square-wave applied pressure history is one boundary condition at the impingement surface of the material and, at the rear surface of the material(s), there is a stationary boundary condition. The objective is to select the equations-of-state that yield the greatest reduction in reflected stress at the rigid-boundary condition, for the smallest overall length, for application to a blast shield. One and two layers of material are considered. Idealizations of the equations-of-state, boundary conditions, length of each layer, and number of layers are arranged to yield simple analytical expressions for the relation of reflected stress to the overall length of the blast shield.

Copyright © 1971 by ASME
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