Analytical and experimental studies of natural vibration modes of ring-stiffened truncated-cone shells with variable theoretical ring fixity /
Eugene C. Naumann, Donnell S. Catherines, and William C. Walton, Jr.

Description

Main Author

Naumann, Eugene C.

Related Names

Walton, William C.
Catherines, Donnell S.
Langley Research Center.
United States. National Aeronautics and Space Administration.

Language(s)

English

Published

Washington, D.C. : National Aeronautics and Space Administration ; 1971.

Subjects

Conical shells > Conical shells / Vibration.
Shells (Engineering) > Shells (Engineering) / Vibration.

Summary

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.

Physical Description

84 p. : ill. ; 27 cm.

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