FREE VIBRATIONS OF RING-STIFFENED SHELLS

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)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1962
Accession Number
AD0276458

Entities

People

  • H. Garnet
  • M.a. Goldberg

Organizations

  • Grumman

Tags

DTIC Thesaurus Topics

  • Displacement
  • Doppler Effect
  • Elastic Properties
  • Equations
  • Equations Of Motion
  • Frequency
  • Frequency Shift
  • Mathematics
  • Stiffening
  • Vibration

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Structural Dynamics.

Technology Areas

  • Space