Accession Number : AD0276458

Title :   FREE VIBRATIONS OF RING-STIFFENED SHELLS

Corporate Author : GRUMMAN AIRCRAFT ENGINEERING CORP BETHPAGE N Y

Personal Author(s) : GARNET,H. ; GOLDBERG,M.A.

Report Date : MAR 1962

Pagination or Media Count : 1

Abstract : The modal method is used to obtain the free modes of vibration of ring-stiffened shells. The equations of motion of the ring reinforced shell are written in terms of the normal modes of the unstiffened shell. The stiffening rings are considered as displacement-dependent line-loads and enter the analysis in terms of their elastic properties. This procedure replaces the usual transcendental frequency equation by a more easily evaluated system of linear, algebraic, homogeneous equations. An arbitrary number of intermediate rings of unequal size and spacing may be accommodated. (Author)

Descriptors :   *STIFFENED CYLINDERS, *VIBRATION, ELASTIC PROPERTIES, LINEAR SYSTEMS, LOAD DISTRIBUTION, MEDICAL RESEARCH, PRESSURE, REINFORCING MATERIALS, RINGS

Distribution Statement : APPROVED FOR PUBLIC RELEASE