Citation
McCoy, John Carver (1958) An Experimental Investigation of the General Instability of Ring-Stiffened, Unpressurized, Thin-Walled Cylinders Under Axial Compression. Engineer's thesis, California Institute of Technology. doi:10.7907/TR8H-6D86. https://resolver.caltech.edu/CaltechETD:etd-01102006-133017
Abstract
Eight different series of thin-walled Mylar cylinders were tested experimentally to investigate the general instability of ring-stiffened, unpressurized, thin-walled cylinders under axial compressive loading. The primary objectives for these tests were: to determine whether the bending or the torsional stiffness of the rings was the most effective stiffening parameter; to determine the relative effectiveness of ring-stiffeners around the inside and the outside of the cylinders; and to investigate the mechanism of buckling of unpressurized cylinders under axial compression. It was found that the torsional stiffness of the ring-stiffeners was the most important parameter for stiffening the thin-walled Mylar cylinders under axial loading. Ring-stiffeners with a low torsional stiffness did not stiffen the cylinder effectively until the rings were closely spaced. Ring-stiffeners on the inside of the cylinders did not affect the maximum buckling load when they were not bonded to the cylinder walls. Ring-stiffeners on the outside of the cylinders provided effective stiffening whether they were bonded to the cylinder walls or not. The experimental results of thin-walled cylinders under axial compression indicated that the cylinder walls expand laterally to some critical amount, at which time they become unstable and suddenly collapse into buckling. The ring-stiffeners increase the critical compressive load with their effective torsional stiffness by resisting the annular collapse of the cylinder walls into diamond shaped buckles. At an L/R ring spacing ratio of 1.0 or less, the walls tended to buckle across the ring-stiffeners.
Item Type: | Thesis (Engineer's thesis) |
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Subject Keywords: | (Aeronautical Engineering) |
Degree Grantor: | California Institute of Technology |
Division: | Engineering and Applied Science |
Major Option: | Aeronautics |
Thesis Availability: | Public (worldwide access) |
Research Advisor(s): |
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Group: | GALCIT |
Thesis Committee: |
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Defense Date: | 1 January 1958 |
Record Number: | CaltechETD:etd-01102006-133017 |
Persistent URL: | https://resolver.caltech.edu/CaltechETD:etd-01102006-133017 |
DOI: | 10.7907/TR8H-6D86 |
Default Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
ID Code: | 102 |
Collection: | CaltechTHESIS |
Deposited By: | Imported from ETD-db |
Deposited On: | 12 Jan 2006 |
Last Modified: | 16 Oct 2023 22:32 |
Thesis Files
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PDF (McCoy_jc_1958.pdf)
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