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The Bending of Some Common Beam Sections into the Plastic Range

Published online by Cambridge University Press:  28 July 2016

Anthony J. Barrett
Anthony J. Barrett*
Affiliation:
Technical Department, Royal Aeronautical Society
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Summary

There is already in existence a fair volume of work on the subject of bending beyond the limit of proportionality, most of which requires the use of actual material stress-strain curves. This note aims to examine the problem in a more general way by using an accurate mathematical form for the stress-strain curve, strain and bending moments being expressed as functions of the ratios of various properties of the material.

The value of maximum permissible fibre stress is considered in relation to current requirements for military aircraft stressing and a guide is presented for the maximum permissible bending moment in some of the more familiar beam cross sections bending about an axis of symmetry.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 57 , Issue 506 , February 1953 , pp. 110 - 115
Copyright
Copyright © Royal Aeronautical Society 1953

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References

1. Cozzone, F. P. (1943). Bending Strength in the Plastic Range. Journal of the Aeronautical Sciences, May 1943.CrossRefGoogle Scholar
2. Beilschmidt, J. L. (1942). The Stresses Developed in Sections Subjected to Bending Moment. Journal of the Royal Aeronautical Society, July 1942.Google Scholar
3. Royal Aeronautical Society's Structures Data Sheets. 01.01.08, Local Instability of Aluminium Alloy Struts with Flat Sides, and 01.01.09, Local Instability Stress Coefficients for Channel and Z-Section Struts.Google Scholar
4. Aircraft Committee of the United States Munitions Board. Strength of Metal Aircraft Elements, Bulletin ANC-5, revised edition June 1951.Google Scholar