Experimental buckling investigation of ring-stiffened cylindrical shells under unsymmetrical axial loads
Six steel shells having nuclear containment-like features were fabricated and loaded to failure with an offset axial load. The shells of R/t = 500 buckled plastically. Four of the shells had reinforced circular cutouts. These penetrations were sized to cut no ring-stiffener, a single, two- or three-ring stiffeners. Reinforcing and framing around the penetrations were based upon the area-replacement rule of the applicable portion of the American Society for Mechanical Engineers (ASME) Boiler and Pressure Vessel Code and were of a design to stimulate actual practice for nuclear steel containments. Prior to testing, imperfections were measured and strain gages were applied to determine information on load distribution at the ends of the cylinder and strain fields at areas likely to buckle. Buckling loads were determined for an axial load applied with an eccentricity of R/2 where R is the cylinder radius. The results showed that the buckling load and mode for the shell having a penetration that did not cut a ring stiffener were essentially the same as those for the unpenetrated shell. The buckling loads for the penetrated shells in which stiffeners were interrupted were less than that for the unpenetrated shells. Results of all tests are compared to numerical solutions carried out using a nonlinear collapse analysis and to the predictions of ASME Code Case N-284.
- Research Organization:
- University of New Mexico, Albuquerque, NM
- OSTI ID:
- 5493257
- Report Number(s):
- CONF-830607-
- Journal Information:
- Am. Soc. Mech. Eng., Pressure Vessels Piping Div., (Tech. Rep.) PVP; (United States), Vol. PVP-VOL. 76; Conference: American Society of Mechanical Engineers pressure vessel and piping conference, Portland, OR, USA, 19 Jun 1983
- Country of Publication:
- United States
- Language:
- English
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Buckling investigation of ring-stiffened cylindrical shells with reinforced openings under unsymmetrical axial loads
Buckling investigation of ring-stiffened cylindrical shells under unsymmetrical axial loads
Related Subjects
CONTAINMENT SHELLS
DEFORMATION
CYLINDRICAL CONFIGURATION
LOADING
NUMERICAL SOLUTION
PLASTICITY
REINFORCED MATERIALS
RINGS
SIMULATION
STEELS
STRAIN GAGES
STRESS ANALYSIS
TESTING
ALLOYS
CONFIGURATION
CONTAINMENT
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS HANDLING
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
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