STRUCTURAL RESPONSE OF UNSTIFFENED TOROIDAL SHELLS,
  Technical Report R 649, Naval Civil Engineering Laboratory, Port Hueneme, CA, W. J. Nordell, J. E. Crawford, and R. M. Beard, November 1969, 21 pages.

Seven model epoxy toroidal shells were tested, and the results were compared with those from analytical solutions. The toroidal shells had a mean radius about the axis of revolution of 6 inches, a mean tube radius of 2 inches, and a mean shell thickness of 0.086 inch. The static elastic strain response of the epoxy models was in satisfactory agreement with that computed using a finite element analysis for axisymmetric shells. Critical buckling pressures for the models were approximately 85% of the analytical prediction, which was based on the mean dimensions.