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Proceedings Paper

Implementation of the Golla-Hughes-McTavish (GHM) method for viscoelastic materials using MATLAB and NASTRAN
Author(s): Warren C. Gibson; Christian A. Smith; Donald J. McTavish
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Paper Abstract

Representation of frequency-dependent viscoelastic material properties has long been problematical in the frequency domain and especially in the time domain. The method of Golla, Hughes, and McTavish (GHM) addresses this problem with a Laplace-domain model of the complex material modulus, in which a number of parameters are determined by curve- fitting to experimental data. The result is well suited to finite element formulations because the equations of motion retain the familiar second-order, constant-coefficient form, at the expense of some extra scalar degrees of freedom. This paper reports on an implementation of GHM in MATLAB, using FEM data imported from NASTRAN. Sample problems demonstrate the efficacy and practicality of the method.

Paper Details

Date Published: 5 May 1995
PDF: 12 pages
Proc. SPIE 2445, Smart Structures and Materials 1995: Passive Damping, (5 May 1995); doi: 10.1117/12.208898
Show Author Affiliations
Warren C. Gibson, CSA Engineering, Inc. (United States)
Christian A. Smith, CSA Engineering, Inc. (United States)
Donald J. McTavish, Dynacon Enterprises Ltd. (Canada)

Published in SPIE Proceedings Vol. 2445:
Smart Structures and Materials 1995: Passive Damping
Conor D. Johnson, Editor(s)

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