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RESEARCH PAPERS

Strain-Rate-Dependent Constitutive Equations for Concrete

[+] Author and Article Information
J. W. Tedesco

Department of Civil Engineering, Auburn University, Auburn, AL 36849

C. A. Ross

Graduate Research and Engineering Center, University of Florida, Shalimar, FL 32579

J. Pressure Vessel Technol 120(4), 398-405 (Nov 01, 1998) (8 pages) doi:10.1115/1.2842350 History: Received January 25, 1998; Revised April 15, 1998; Online February 11, 2008

Abstract

This paper summarizes the results of a comprehensive experimental study to quantify the effects of strain rate on concrete compressive and tensile strengths. Direct compression and splitting tensile tests were conducted at quasi-static rates (between 10−7 /s and 10−5 /s) in a standard MTS machine to establish the “static” properties. These same tests were conducted at high strain rates (between 10−1 /s and 103 /s) on a split-Hopkinson pressure bar (SHPB) to determine the dynamic material properties. A statistical analysis was performed on the data and strain-rate-dependent constitutive equations, both for compression and tension, were developed. These constitutive equations were subsequently employed to modify an existing quasi-static, nonlinear concrete material model.

Copyright © 1998 by The American Society of Mechanical Engineers
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