Accession Number:

AD0662199

Title:

VIBRATIONS AND STABILITY OF A CONICAL TRIPLE-LAYERED SHELL WITH FLUID FLOW IN THE MIDDLE LAYER,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1967-08-03

Pagination or Media Count:

13.0

Abstract:

The vibrations and stability of a composite triple-layered conical shell were investigated. The shell consisted of two isotropic coaxial smooth layers rigidly joined at contact points formed by a corrugated middle layer. An ideal incompressible fluid of density rho sub 0 was flowing in the channels formed by the corrugation crimps and the external shells. The general rate of flow in the middle layer was constant. The analysis employs a coordinate system based upon the median surface of the middle layer. It was concluded that 1 the frequency of shell vibration decreases continuously with increasing rate of flow 2 the shell loses stability through divergence at supercritical rates of flow 3 the amplitude of vibration increases or decreases depending on the direction of flow.

Subject Categories:

  • Structural Engineering and Building Technology
  • Fluid Mechanics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE