Comparison of two laryngeal tissue fiber constitutive models

Eric J. Hunter, Anil Kumar Reddy Palaparthi, Thomas Siegmund, Roger W. Chan

Research output: Contribution to journalArticle

Abstract

Biological tissues are complex time-dependent materials, and the best choice of the appropriate time-dependent constitutive description is not evident. This report reviews two constitutive models (a modified Kelvin model and a two-network Ogden-Boyce model) in the characterization of the passive stress-strain properties of laryngeal tissue under tensile deformation. The two models are compared, as are the automated methods for parameterization of tissue stress-strain data (a brute force vs. a common optimization method). Sensitivity (error curves) of parameters from both models and the optimized parameter set are calculated and contrast by optimizing to the same tissue stress-strain data. Both models adequately characterized empirical stress-strain datasets and could be used to recreate a good likeness of the data. Nevertheless, parameters in both models were sensitive to measurement errors or uncertainties in stress-strain, which would greatly hinder the confidence in those parameters. The modified Kelvin model emerges as a potential better choice for phonation models which use a tissue model as one component, or for general comparisons of the mechanical properties of one type of tissue to another (e.g.; axial stress nonlinearity). In contrast, the Ogden-Boyce model would be more appropriate to provide a basic understanding of the tissue's mechanical response with better insights into the tissue's physical characteristics in terms of standard engineering metrics such as shear modulus and viscosity.

Original languageEnglish (US)
Pages (from-to)179-196
Number of pages18
JournalMechanics of Time-Dependent Materials
Volume18
Issue number1
DOIs
StatePublished - Feb 2014

Fingerprint

Constitutive models
Tissue
Fibers
Shear viscosity
Parameterization
Measurement errors
Elastic moduli
Mechanical properties

Keywords

  • Constitutive models
  • Parameter identification
  • Sensitivity study
  • Vocal fold biomechanics

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Aerospace Engineering

Cite this

Comparison of two laryngeal tissue fiber constitutive models. / Hunter, Eric J.; Palaparthi, Anil Kumar Reddy; Siegmund, Thomas; Chan, Roger W.

In: Mechanics of Time-Dependent Materials, Vol. 18, No. 1, 02.2014, p. 179-196.

Research output: Contribution to journalArticle

Hunter, Eric J. ; Palaparthi, Anil Kumar Reddy ; Siegmund, Thomas ; Chan, Roger W. / Comparison of two laryngeal tissue fiber constitutive models. In: Mechanics of Time-Dependent Materials. 2014 ; Vol. 18, No. 1. pp. 179-196.
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