An improvement of Southwell's method for determining buckling loads
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Authors
Hendershot, Robert Paul
Subjects
Column buckling
Column experiments
Southwell's column method
Column experiments
Southwell's column method
Advisors
Brock, John E.
Date of Issue
1972-06
Date
June 1972
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
If an elastic bar with some initial imperfection is subjected to increasing compressive axial load, the lateral deflection, measured anywhere along its length, increases monotonically; the primary buckling mode becoming more and more dominant in the deflected shape. A classical approximate technique, due to R.V. Southwell, correlates axial load and lateral deflection for determination of the primary buckling load of the bar. However, Southwell's approximation may be inaccurate is the primary mode does not predominate in the deflected shape. The present thesis proposes a technique which employs axial loading, but also transverse loading to insure dominance of the primary mode in the deflected shape. The technique allows experimental determination of the second buckling load, again using appropriate transverse loads to insure dominance of that mode in the deflected shape.
Type
Thesis
Description
Series/Report No
Department
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.