Viscoelastic Damping of Turbine and Compressor Blade Vibrations.

Abstract

An experimental and an analytical model of a turbine/compressor blade is developed in order to investigate the feasibility of using a viscoelastic material to damper the vibrations of the blade. The experimentally determined response of the blade at various frequencies is studied. In order to make a qualitative comparison of damping effectiveness, the response of a similar model using friction damping is also experimentally studied. A model of a modified cantilever beam is used to develop the equation of motion of the blade and the resulting eigenvalve problem is solved using an iterative technique. An analysis of the rigid body mode is performed. A comparison and an analysis of the results of the experimental and analytical models are delineated. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1982
Accession Number
ADA118135

Entities

People

  • Stephen Lee Vest

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Broadband
  • Cantilever Beams
  • Classification
  • Compressor Blades
  • Compressors
  • Equations
  • Frequency
  • Friction
  • Materials
  • Materials Laboratories
  • Measurement
  • Modulus Of Elasticity
  • Moment Of Inertia
  • Resonant Frequency
  • Test Sets
  • Turbines
  • Vibration

Fields of Study

  • Engineering
  • Physics

Readers

  • Aerodynamics.
  • Fluid Dynamics.
  • Structural Dynamics.