Accession Number : ADP004698

Title :   A Derivation of Equivalent Linear Viscous and Elastic Constants for Viscoelastic Materials,

Corporate Author : MARTIN MARIETTA AEROSPACE DENVER CO

Personal Author(s) : Dahl,S. R. ; Rice,R. B.

Report Date : NOV 1984

Pagination or Media Count : 9

Abstract : A testing method was devised and implemented to directly measure the hysteresis characteristics of a viscoelastic material for shear displacements. Three commonly available materials were tested over a frequency range of 0.1 to 100 Hz. Though the materials are essentially non-linear, linear elastic and viscous damping parameters were approximated using and equivalent energy approach valid for specific frequencies and amplitudes. These linearized parameters can then be used in linear structural and control systems analysis programs for the analysis of structures having distributed discrete passive damping mechanisms. (Author)

Descriptors :   *DAMPING, *VISCOELASTICITY, *MATERIALS, MATHEMATICAL MODELS, EXPERIMENTAL DATA, HYSTERESIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE