INELASTIC BUCKLING TESTS OF RING-STIFFENED CYLINDERS UNDER HYDROSTATIC PRESSURE
- 1 May 1965
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
A series of small machined aluminum models were collapsed under external hydrostatic pressure to study the inelastic buckling of near-perfect ring-stiffened cylinders made of strain-hardening materials. The predominant modes of failure were general instability and axisymmetric shell buckling. Comparisons of test results with the analyses of Lunchick, Krenzke, and Kiernan show promising correlation but additional data would be needed for a complete evaluation. High bending stresses near frames did not noticeably affect axisymmetric shell buckling strength. The presence of frame fillets, however, caused a significant increase in general instability strength although bending stresses in the absence of fillets were relatively low.Keywords
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