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 Citations (Scopus)

Abstract

The constitutive equation with stress-dependent coefficients for laminated composite is derived and employed for iterative determination of myocardial fiber's stiffness equation E[f] = Kσ[f] + C from myocardial strip's stiffness equation E[s] = K[s]σ[s] + C[s]. The strip's stiffness constants K[s] and C[s] are estimated by the least-square 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
Volume102
Issue number3
StatePublished - Aug 1980

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Laminated composites
Stiffness
Fibers
Least-Squares Analysis
Canidae
Curve fitting
Fiber reinforced materials
Constitutive equations
Stretching

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering

Cite this

Pao, Y. C., Nagendra, G. K., Padiyar, R., & Ritman, E. L. (1980). Derivation of myocardial fiber stiffness equation based on theory of laminated composite. Journal of Biomechanical Engineering, 102(3), 252-257.

Derivation of myocardial fiber stiffness equation based on theory of laminated composite. / Pao, Y. C.; Nagendra, G. K.; Padiyar, R.; Ritman, E. L.

In: Journal of Biomechanical Engineering, Vol. 102, No. 3, 08.1980, p. 252-257.

Research output: Contribution to journalArticle

Pao, YC, Nagendra, GK, Padiyar, R & Ritman, EL 1980, 'Derivation of myocardial fiber stiffness equation based on theory of laminated composite', Journal of Biomechanical Engineering, vol. 102, no. 3, pp. 252-257.
Pao, Y. C. ; Nagendra, G. K. ; Padiyar, R. ; Ritman, E. L. / Derivation of myocardial fiber stiffness equation based on theory of laminated composite. In: Journal of Biomechanical Engineering. 1980 ; Vol. 102, No. 3. pp. 252-257.
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