A Universal Column Formula for Load at which Yielding Starts
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Donnell, L H↗
Engineering topics
Publications and source records attributed to Donnell, L H.
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In this report a theoretical solution is developed for the torsion on a round thin-walled tube for which the walls become unstable. The results of this theory are given by a few simple formulas and curves which cover all cases. The differential equations of equilibrium are derived in a simpler form than previously found, it being shown that many items can be neglected.