A Strain Energy Function for Lung Parenchyma

[+] Author and Article Information
D. Stamenovic, T. A. Wilson

Department of Aerospace Engineering and Mechanics, University of of Minnesota, Minneapolis, Minn. 55455

J Biomech Eng 107(1), 81-86 (Feb 01, 1985) (6 pages) doi:10.1115/1.3138525 History: Received November 14, 1983; Revised July 09, 1984; Online June 15, 2009


The strain energy for the air-filled lung is calculated from a model of the parenchymal microstructure. The energy is the sum of the surface energy and the elastic energies of two tissue components. The first of these is the peripheral tissue system that provides the recoil pressure of the saline-filled lung, and the second is the system of line elements that form the free edges of the alveolar walls bordering the alveolar ducts. The computed strain energy is consistent with the observed linear elastic behavior of parenchyma and the data on large deformations around blood vessels.

Copyright © 1985 by ASME
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