Research Article
Mar 1969
Photoelastic Analysis of Undersea Structures
Publication: Journal of the Structural Division
Volume 95, Issue 3
Abstract
Stress distributions in sphere-cylinder transition regions of externally pressurized thick-walled vessels are studied. Data determined by two different approaches, photoelasticity and finite element computer programs, are compared. These approaches afford a capability for analyzing complicated deep ocean structures that are of considerable interest to the U.S. Navy. Two small-scale epoxy models of the prototype structures were loaded by external pressure and stress frozen. The first model had a cylinder radius-to-wall thickness ratio = 8 and incorporated 60% balanced opening reinforcement at the transition. The second had a cylinder radius-to-wall thickness ratio of 2.5 and 65% balanced reinforcement. After stress freezing, tie models were sliced longitudinally and transversely; meridional and circumferential stresses were determined photoelastically in a diffused-light polariscope. The experimental solutions verified stresses calculated by finite element computer programs.
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Published In
Journal of the Structural Division
Volume 95 • Issue 3 • March 1969
Pages: 317 - 326
Copyright
© 1969 American Society of Civil Engineers.
History
Published in print: Mar 1969
Published online: Feb 1, 2021
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Stanley K. Takahashi, M.ASCE
Research Structural Engr., Naval Civil Engrg. Lab. Port Hueneme, Calif.
Robert Mark, AM.ASCE
Assoc. Prof. Dept. of Civil and Geological Engrg., Princeton University, Princeton, N.J.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.