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RESEARCH PAPERS

A One-Dimensional, Two-Phase Flow Model for Taylor Impact Specimens

[+] Author and Article Information
S. E. Jones

U. S. Air Force Academy, Colo. 80840-5701

P. P. Gillis

University of Kentucky, Lexington, KY

J. C. Foster, L. L. Wilson

Air Force Armament Laboratory, Eglin Air Force Base, FL

J. Eng. Mater. Technol 113(2), 228-235 (Apr 01, 1991) (8 pages) doi:10.1115/1.2903397 History: Received June 01, 1989; Revised May 01, 1990; Online April 29, 2008

Abstract

In this paper, a simple theoretical analysis of an old problem is presented. The analysis is more complete than earlier versions, but retains the mathematical simplicity of the earlier versions. The major thrust is to separate the material response into two phases. The first phase is dominated by strain rate effects and has a variable plastic wave speed. The second phase is dominated by strain hardening effects and has a constant plastic wave speed. Estimates for dynamic yield stress, strain, strainrate, and plastic wave speed during both phases are given. Comparisons with several experiments on OFHC copper are included.

Copyright © 1991 by The American Society of Mechanical Engineers
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