A Constitutive Theory for Biomembranes: Application to Epicardial Mechanics

[+] Author and Article Information
J. D. Humphrey

Department of Mechanical Engineering, The University of Maryland, Baltimore, MD 21228

R. K. Strumpf, F. C. P. Yin

Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, MD 21205

J Biomech Eng 114(4), 461-466 (Nov 01, 1992) (6 pages) doi:10.1115/1.2894095 History: Received April 15, 1991; Revised March 07, 1992; Online March 17, 2008


We present a new theoretically motivated experimental approach for identifying the functional form of a constitutive relation for any nonlinear, anisotropic pseudoelastic biological membrane. The utility of this approach is illustrated by identifying, from biaxial data, a new constitutive relation for excised ventricular epicardium. Values of the associated material parameters are calculated and compared for right and left ventricular specimens. Based on our findings, we suggest that there are no significant differences in the biomechanical behavior of epicardium excised from the right and left ventricular free walls of canine hearts.

Copyright © 1992 by The American Society of Mechanical Engineers
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