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Description of stress-strain curves by three parameters

Author: Walter Ramberg; William R Osgood; United States. National Advisory Committee for Aeronautics.
Publisher: Washington D.C. : National Advisory Committee for Aeronautics ; 1943.
Series: Technical note (United States. National Advisory Committee for Aeronautics), no. 902.
Edition/Format:   Book : National government publication : EnglishView all editions and formats
Database:WorldCat
Summary:
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,  Read more...
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Genre/Form: Mathematical formulae
Formulae
Material Type: Government publication, National government publication
Document Type: Book
All Authors / Contributors: Walter Ramberg; William R Osgood; United States. National Advisory Committee for Aeronautics.
OCLC Number: 647792994
Notes: "July 1943."
NACA TN no. 902.
Description: 13, [15] p. : ill. ; 27 cm.
Series Title: Technical note (United States. National Advisory Committee for Aeronautics), no. 902.
Responsibility: Walter Ramberg and William R. Osgood.

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 alclade 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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