Stability of thin-walled tubes under torsion

Donnell, L H
naca-report-479
1935


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.

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http://naca.central.cranfield.ac.uk/reports/1935/naca-report-479.pdf