Description of Stress-Strain Curves by Three Parameters
01 Jul 1943-
TL;DR: In this paper, a simple formula is suggested for describing the stress-strain curve in terms of three parameters; namely, Young's modulus and two secant yield strengths.
Abstract: A simple formula is suggested for describing the stress-strain curve in terms of three parameters; namely, Young's modulus and two secant yield strengths. Dimensionless charts are derived from this formula for determining the stress-strain curve, the tangent modulus, and the reduced modulus of a material for which these three parameters are given. Comparison with the tensile and compressive data on aluminum-alloy, stainless-steel, and carbon-steel sheet in NACA Technical Note No. 840 indicates that the formula is adequate for most of these materials. The formula does not describe the behavior of alclad sheet, which shows a marked change in slope at low stress. It seems probable that more than three parameters will be necessary to represent such stress-strain curves adequately.
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Cites background from "Description of Stress-Strain Curves..."
...The starting point for Dahl’s model is the stress-strain curve in classical solid mechanics, see [46] and [49], and Figure 6....
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Cites background from "Description of Stress-Strain Curves..."
...The starting point of Dahl’s model is the stress-strain curve in classical solid mechanics [17, 18]; see Figure 4....
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