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RESEARCH PAPERS

Two-Dimensional Stress-Strain Relationship for Canine Pericardium

[+] Author and Article Information
Hwa Soon Choi, R. P. Vito

School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Ga. 30332

J Biomech Eng 112(2), 153-159 (May 01, 1990) (7 pages) doi:10.1115/1.2891166 History: Received May 15, 1989; Revised January 02, 1990; Online March 17, 2008

Abstract

Two-dimensional pseudoelastic mechanical properties of the canine pericardium were investigated in vitro . The pericardium was assumed to be orthotropic. The material symmetry axis was determined a priori and aligned with the stretching axis. Various biaxial stretching tests were then performed and a set of data covering a wide range of strains was constructed. This complete data set was fitted to a new exponential type constitutive model, and a set of true material constants was determined for each specimen. Using the constitutive model and the true material constants, the results from constant lateral force tests and constant lateral displacement tests were predicted and compared with experiment.

Copyright © 1990 by The American Society of Mechanical Engineers
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