Shear Lag in Box Beams Methods of Analysis and Experimental Investigations (NACA Technical Report 739)

The bending stresses in the covers of box beams or wide-flange beams differ appreciably from the stresses predicted by the ordinary bending theory on account of shear deformation of the flanges. The problem of predicting these differences has become known as the shear-lag problem. The first part of...

Full description

Saved in:
Bibliographic Details
Main Authors Kuhn Paul, Chiarito Patrick T
Format eBook
LanguageEnglish
Published National Advisory Committee for Aeronautics/NASA 1941
Subjects
Aerospace & Radar Technology
General References
Online AccessGet full text

Cover

More Information
Summary:The bending stresses in the covers of box beams or wide-flange beams differ appreciably from the stresses predicted by the ordinary bending theory on account of shear deformation of the flanges. The problem of predicting these differences has become known as the shear-lag problem. The first part of this paper deals with methods of shear-lag analysis suitable for practical use. The second part of the paper describes strain-gage tests made by the NACA to verify the theory. Three tests published by other investigators are also analyzed by the proposed method. The third part of the paper gives numerical examples illustrating the methods of analysis.