Material Stress-Strain Curve
The Stress-Strain Curve calculator allows for the calculation of the engineering stress-strain curve of a material using the Ramberg-Osgood equation. See the reference section for details on the methodology and the equations used.
Material Property Inputs
Enter the material properties in either US or SI units:
Points for Stress-Strain Curve
The points for the engineering stress-strain curve are shown below:
where σ is the value of stress, E is the elastic modulus of the material, Sty is the tensile yield strength of the material, and n is the strain hardening exponent of the material which can be calculated based on the provided inputs.
Based on the specified material properties, the value of the strain hardening exponent, n, is:
|n =||strain hardening exponent|
Strain Values at Yield and Ultimate Strength Points
The strain value associated with the yield strength is:
Note that a plastic strain of 0.002 is assumed. This is consistent with the 0.2% offset method, as described here.
The strain value associated with the ultimate strength is:
where εf is the plastic strain at failure and is simply the percent elongation expressed in decimal form:
|εf = eL / 100% =|
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