James P. Peterson
naca-tn-2188
Sep 1950
Five stiffened circular cylinders were tested to failure under various combinations of torsion and compression. The results of the testes are presented in the form of plots of stringer stress against cylinder load and an interaction curve for the strength of stringers that fail by local crippling.
An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1950/naca-tn-2188.pdf