Normal-pressure Tests of Circular Plates with Clamped Edges
Albert E. McPherson · Walter Ramberg · Samuel Levy
Jan 1942 · National Advisory Committee for Aeronautics
eBook
34
Pages
About this eBook
A fixture is described for making normal-pressure tests of flat plates 5 inches in diameter in which particular care was taken to obtain rigid clamping at the edges. Results are give for 19 plates, ranging in thickness from 0.015 to 0.072 inch. The center deflections and the extreme-fiber stresses at low pressures were found to agree with theoretical values; the center deflections at high pressures were 4 to 12 percent greater than the theoretical values. Empirical curves are derived of the pressure for the beginning of permanent set as a function of the dimensions of the plate and the tensile properties of the material.
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