Derivation of myocardial fiber stiffness equation based on theory of laminated composite

Y. C. Pao, G. K. Nagendra, R. Padiyar, E. L. Ritman

Research output: Contribution to journalArticle

13 Scopus citations


The constitutive equation with stress-dependent coefficients for laminated composite is derived and employed for iterative determination of myocardial fiber's stiffness equation Ef = Kσf + C from myocardial strip's stiffness equation Es = Ksσs + Cs. The strip's stiffness constants Ks and Cs are estimated by the leastsquare curve fitting of the stress-strain data experimentally obtained from uniaxially stretching of strips of left ventricular heart wall excised from seven canine hearts. The values of K and C computed at selected fiber orientations across the thickness of the strip and using three, five, and ten-layer approximations are reported.

Original languageEnglish (US)
Pages (from-to)252-257
Number of pages6
JournalJournal of Biomechanical Engineering
Issue number3
StatePublished - Aug 1980


ASJC Scopus subject areas

  • Biomedical Engineering
  • Physiology (medical)

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