Elastic stability of clamped shallow spherical shells subjected to a small finite-area load at the apex is studied experimentally. Upper and lower critical buckling loads and prebuckled and postbuckled deflections are found for λ between 10 and 17. Buckling modes have been observed and defined. Nonaxisymmetric deformations are noted. Shells for λ less than 8 1/2 exhibit plastic behavior and do not buckle.
Experimental Buckling Modes of Clamped Shallow Shells Under Concentrated Load
F. A. Penning
The Martin Company, Denver, Colo.
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Penning, F. A. (June 1, 1966). "Experimental Buckling Modes of Clamped Shallow Shells Under Concentrated Load." ASME. J. Appl. Mech. June 1966; 33(2): 297–304. https://doi.org/10.1115/1.3625041
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