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TECHNICAL PAPERS

Constitutive Equations for Solid Propellants

[+] Author and Article Information
Şebnem Özüpek, Eric B. Becker

Department of Aerospace Engineering and Engineering Mechanics, University of Texas, Austin, TX 78712

J. Eng. Mater. Technol 119(2), 125-132 (Apr 01, 1997) (8 pages) doi:10.1115/1.2805983 History: Received March 02, 1996; Revised September 19, 1996; Online November 27, 2007

Abstract

Mechanical behavior of the Space Shuttle redesigned solid rocket motor (RSRM) propellant is studied from a phenomenological point of view. Motivated by the study of the experimental data three initially isotropic constitutive models have been developed. All models represent the effect of strain rate, superimposed hydrostatic pressure, and cyclic loading on the stress and dilatation response of the material. A particular emphasis is given to the prediction of volume dilatation. The model resulting in the best representation of the available data is calibrated using only a few tests. The predictions of the model are compared with experiments for several loading conditions not used in the calibration.

Copyright © 1997 by The American Society of Mechanical Engineers
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