Engineering topics
Publications and source records attributed to Catherines, D. S..
Computer program solves vibration modes and frequencies of thin shells of revolution having general meridional curvature and orthotropic elastic properties in order to evaluate the dynamic behavior of structures with thin shelled components.
Experimental and analytical investigations of the vibratory behavior of ring-stiffened truncated-cone shells are described. Vibration tests were conducted on 60 deg conical shells having up to four ring stiffeners and for free-free and clamped-free edge constraints and 9 deg 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.
Computer program using finite element method for computing temperature distributions in thin shells of revolution
Digital computer program for computing vibration characteristics of ring-stiffened orthotropic shells of revolution - users manual
Geometrically exact finite element for thin shells of revolution, using approximation to predict boundary layer stress distribution during vibration
Vibration analysis on ring stiffened conical shell reentry configuration
Finite element method for computing natural frequencies and mode shapes of thin shells of revolution
Geometrically exact finite element for thin shells of revolution, using approximation to predict boundary layer stress distribution during vibration