Accession Number : AD0784917

Title :   Vibrations of Axially Loaded Stiffened Cylindrical Shells. Part I. Theoretical Analysis.

Descriptive Note : Interim rept.,

Corporate Author : TECHNION - ISRAEL INST OF TECH HAIFA DEPT OF AERONAUTICAL ENGINEERING

Personal Author(s) : Singer,Josef ; Rosen,Aviv

Report Date : FEB 1974

Pagination or Media Count : 99

Abstract : A method of analysis and a computer program were developed for determination of the frequencies and mode shapes of the free vibrations of stiffened cylindrical shells. The shells are stiffened by closely spaced stringers and rings, have different boundary conditions, and are subjected to either a static axial load or a hydrostatic pressure. The stiffeners are considered 'smeared' over the shell. The system of equations which was obtained is solved by a method known as the 'exact method'. The theoretical investigation includes a study of the variation in frequencies and mode shapes with increase in the static load until buckling. The results of the present analysis are compared to those of other methods which appear in the literature, and good agreement is obtained. (Author)

Descriptors :   *STIFFENED CYLINDERS, *SHELLS(STRUCTURAL FORMS), *VIBRATION, STIFFENING, LOADS(FORCES), BUCKLING, RESONANT FREQUENCY, ISRAEL

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE