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Stiffened shear webs: post-buckling failure of stiffeners of less than critical rigidity

Published online by Cambridge University Press:  04 July 2016

A. Rothwell  and
N. J. Liacos
A. Rothwell
Affiliation:
College of Aeronautics, Cranfield Institute of Technology
N. J. Liacos
Affiliation:
Hellenic Air Force
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Extract

The buckling coefficient for a conventional shear web, reinforced by a series of equally-spaced transverse stiffeners, is practically independent of the flexural rigidity of the stiffeners provided this exceeds a certain critical value. The stiffeners then provide conditions close to simple-support (if they are of negligible torsional stiffness). For stiffeners of less than this critical rigidity, reduced buckling coefficients are plotted in Ref. 1, in terms of a stiffness parameter μ related to the second moment of area of the stiffeners. Reference 1 also shows that the critical value μc referred to above increases rapidly with reducing stiffener pitch, leading in some cases to impractically large stiffeners.

Type
Technical Note
Information
The Aeronautical Journal , Volume 83 , Issue 828 , December 1979 , pp. 490 - 493
Copyright
Copyright © Royal Aeronautical Society 1979 

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References

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