Theoretical and Experimental Vibration and Buckling Results for Blunt Truncated Conical Shells with Ring-supported Edges PDF Download
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Author: Sidney C. Dixon
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 44
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Book Description
Author: Sidney C. Dixon
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 44
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 466
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Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1290
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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
Author: Robert Miserentino
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 44
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Book Description
The vibration and buckling characteristics of a series of 140 deg ring-supported conical shells have been investigated experimentally and analytically. Experimental results were obtained from 14 conical shells, each attached to a solid nose cap at the small end. The large (base) end was either free or attached to a solid ring of rectangular cross section. The size of the solid base rings of rectangular cross section was systematically varied to provide a wide range of edge restraint. Shell buckling was induced by aerodynamic loading at a Mach number of 3; the vibration data were obtained prior to the wind tunnel tests. The experimental vibration data indicated that the size of the base rings had a pronounced effect on the magnitude of the frequencies and on the frequency spectrum. For vibration modes having less than two circumferential waves, the frequencies descreased with increasing ring size; whereas, for modes with several circumferential waves, the frequencies initially increased rapidly with ring size and then became relatively insensitive to further increases in ring size. This latter behavior was similar to the trend exhibited by the variation of buckling pressure with ring size. The experimental results were in excellent qualitative agreement with theoretical results and indicated that current shell-of-revolution analyses are adequate for predicting the vibration and buckling behavior of ring-supported shells, at least for the simple isotropic shells considered in this investigation.
Author: Joseph R. Stephens
Publisher:
ISBN:
Category : Microstructure
Languages : en
Pages : 892
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Book Description
An investigation was conducted to determine the effect of temperature and composition on alloy softening in group VIA metals Cr, Mo, and W alloyed with Re. Results showed that alloy softening was similar in all three alloy systems occurring at homologous temperatures less than 0.16 and at Re concentrations less than 16 atom percent. Rhenium content required to produce a hardness minimum diminished rapidly in all three systems with increasing test temperature. The similarities in hardness behavior in these three alloy systems suggesat common softening mechanism which may arise from lowering the Peierls stress.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 40
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Author: Eugene C. Naumann
Publisher:
ISBN:
Category : Conical shells
Languages : en
Pages : 90
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Book Description
Experimental and analytical investigations of the vibratory behavior of ring-stiffened truncated-cone shells are described. Vibration tests were conducted on (1) 60 [degree] conical shells having up to four ring stiffeners and for free-free and clamped-free edge constraints and (2) 90 [degree] conical shells, for two thicknesses, each with two angle rings and for free-free, free-clamped, and clamped-clamped edge constraints. The analytical method is based on linear thin-shell theory, employing the Rayleigh-Ritz method. Discrete rings are represented as composed of one or more segments, each of which is a short truncated-cone shell of uniform thickness. Equations of constraint are used to join a ring and shell along a circumferential line connection. Excellent agreement was obtained for comparisons of experimental and calculated frequencies.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 236
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1386
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Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1466
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