STRUCTURAL DAMPING IN PERMANENT JOINTS

Abstract

Factors causing damping of vibrations of any system are: influence of the medium in which the vibrations are performed (aero- and hydrodynamic damping), internal friction in the material and, finally, friction in supports and couplings. It has at present become entirely clear that in the overwhelming majority of cases the most important role is played by friction losses in couplings of mechanical systems. Two classes of cases should be here distinctly distinguished: (1) friction in moving couplings (of the type of bearings, guides, etc.); (2) friction in permanent joints (press-fit, riveted, slotted, threaded and the like). While the problem of friction in moving joints has been studied for a long time, friction in permanent joints was subjected to investigation quite recently. The last type of damping is further called structural damping. The present work represents an attempt to generalize all the results obtained in this field, here the basic content of the book pertains to the theory of structural damping.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1964
Accession Number
AD0601544

Entities

People

  • N. G. Kalinin
  • Yu. A. Lebedev

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Bending Moments
  • Boundaries
  • Construction
  • Differential Equations
  • Elastic Properties
  • Engineering
  • Equations
  • Gas Turbines
  • Internal Friction
  • Joints
  • Mechanics
  • Modulus Of Elasticity
  • Shear Modulus
  • Turbine Blades
  • Turbine Components
  • Turbines

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Systems Analysis and Design
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).