A single integral finite strain viscoelastic model of ligaments and tendons.


Journal Article

A general continuum model for the nonlinear viscoelastic behavior of soft biological tissues was formulated. This single integral finite strain (SIFS) model describes finite deformation of a nonlinearly viscoelastic material within the context of a three-dimensional model. The specific form describing uniaxial extension was obtained, and the idea of conversion from one material to another (at a microscopic level) was then introduced to model the nonlinear behavior of ligaments and tendons. Conversion allowed different constitutive equations to be used for describing a single ligament or tendon at different strain levels. The model was applied to data from uniaxial extension of younger and older human patellar tendons and canine medial collateral ligaments. Model parameters were determined from curve-fitting stress-strain and stress-relaxation data and used to predict the time-dependent stress generated by cyclic extensions.

Full Text

Cited Authors

  • Johnson, GA; Livesay, GA; Woo, SL; Rajagopal, KR

Published Date

  • May 1996

Published In

Volume / Issue

  • 118 / 2

Start / End Page

  • 221 - 226

PubMed ID

  • 8738788

Pubmed Central ID

  • 8738788

Electronic International Standard Serial Number (EISSN)

  • 1528-8951

International Standard Serial Number (ISSN)

  • 0148-0731

Digital Object Identifier (DOI)

  • 10.1115/1.2795963


  • eng