Instabilities of a Spatial System of Articulated Pipes Conveying Fluid

Abstract

A spatial system of two articulated pipes conveying fluid is examined analytically and experimentally. As the flowrate is increased, stable equilibrium is studied for either divergence (static buckling) or by flutter (oscillations with increasing amplitude), depending upon the value of an angle beta which measures the 'out-of-planeness' of the system. It is found that in the range between zero and 90 degrees there exists a transition value of beta below which stability is lost by flutter and above which stability is lost by divergence.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1972
Accession Number
AD0746699

Entities

People

  • George Herrmann
  • Michael P. Bohn

Organizations

  • Stanford University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplitude
  • Applied Mechanics
  • Ball Bearings
  • Buckling
  • Coefficients
  • Energy
  • Equations
  • Equations Of Motion
  • Flow Rate
  • Instability
  • Joints
  • Kinetic Energy
  • Mass
  • Mathematical Analysis
  • Mechanics
  • Pressure Gages
  • Tubes

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Combustion and Flow Dynamics.
  • Structural Dynamics.