AN EXPERIMENTAL INVESTIGATION OF THE YIELD STRENGTH OF A MACHINED RING-STIFFENED CYLINDRICAL SHELL (MODEL BR-7M) UNDER HYDROSTATIC PRESSURE,
Abstract
The effects of initial imperfections and residual welding and rolling stresses on the yield strength of a stiffened cylinder were investigated by tests of a machined and stress-relieved model, Model BR-7M, identical in geometry and of the same material as a previously tested fabricated model, Model BR-7. The experimental collapse pressure of 1502 psi agreed well with collapse pressures computed from theories which account for the plastic reserve strength. The pressure at which yielding began agreed more closely with that calculated by the maximum-shear-stress or the Hencky-Von Mises criterion than with that calculated by the maximum-principal-stress criterion. The data also indicated that the mathematical form of the deflection function of the shell did not change appreciably in the elastic-plastic range. Comparison of the collapse pressures of the machined and welded models indicated that for the geometry tested the residual welding and rolling stresses do not adversely affect the collapse pressure. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1958
- Accession Number
- AD0650540
Entities
People
- James A. Overby
- Myron E. Lunchick