Elastic Moduli of Lungs. Revision,

Abstract

Macroscopic elastic moduli governing the incremental deformation of pressurized lungs are calculated on the basis of a micromechanical study of an individual lung element (alveolus). The spongy lung tissue (parenchyma) is presumed to be in an initial state of isotropic tension, and the lung alveolus is idealized as a pin-jointed truss in the shape of a regular dodecahedron. The analysis is based on a variational statement of non-linear structural mechanics, and the results show how the moduli depend on the initial tension and the assumed constitutive behavior of the idealized truss members.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1986
Accession Number
ADA178195

Entities

People

  • Bernard Budiansky
  • Eitan Kimmel

Organizations

  • Harvard University

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Biomechanical Engineering
  • Bulk Modulus
  • Composite Materials
  • Constitutive Equations
  • Elastic Properties
  • Engineering
  • Equations
  • Geometry
  • Lung
  • Mechanical Engineering
  • Mechanics
  • Modulus Of Elasticity
  • Shape
  • Shear Modulus
  • Strain Rate
  • Stresses
  • Structural Mechanics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Mechanical Engineering/Mechanics of Materials.
  • Oncology and Biomarker-Based Cancer Detection.