Parameter identification procedure for heterogeneous viscoelastic composites using iterative functions

Lev Khazanovich, Adam Zofka, Mihai Marasteanu

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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.

Original languageEnglish (US)
Article number007007QEM
Pages (from-to)849-857
Number of pages9
JournalJournal of Engineering Mechanics
Volume136
Issue number7
DOIs
StatePublished - Jul 1 2010

Keywords

  • Asphalts
  • Composite materials
  • Elasticity
  • Mixtures
  • Numerical analysis
  • Pavements
  • Viscoelasticity

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