Parameter Identification Procedure for Heterogeneous Viscoelastic Composites Using Iterative Functions
Publication: Journal of Engineering Mechanics
Volume 136, Issue 7
Abstract
This paper presents a new numerical procedure for the determination of the viscoelastic compliance properties of a matrix phase from a simple three-point bending test on a composite beam. The composite is modeled as elastic inclusions randomly dispersed throughout a viscoelastic matrix. It is also assumed that the spatial distribution of the inclusions in the composite is known or can be determined. Zevin’s method of iterative functions is proposed for the determination of the matrix properties. Following a detailed explanation of the proposed scheme, a numerical verification is performed using three-dimensional finite-element (FE) analysis simulations. The proposed scheme was applied to the experimentally obtained creep compliance of the asphalt concrete beam. The obtained viscoelastic properties of the asphalt binder matrix phase were used as input into the FE model to simulate the behavior of the composite beam. An excellent comparison between the experimental data and the predicted beam deflections was observed. This shows that the proposed method is robust and it can be implemented to solve identification problems for viscoelastic composite materials.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 136 • Issue 7 • July 2010
Pages: 849 - 857
Copyright
© 2010 ASCE.
History
Received: Sep 25, 2008
Accepted: Dec 4, 2009
Published online: Dec 14, 2009
Published in print: Jul 2010
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