Elastance and Inertance in UBA Breathing Bag Simulation and Design

Abstract

This work deals with various aspects of elastance and inertance as they relate to UBA breathing bag design, including non-linear elastance, impedance testing, and methods of inertance reduction and control. The results of this work show that (a) nonlinear elastance may-be useful in dual breathing bag design but not in single bag designs, (b) elastance should be measured statically or quasi-statically rather than dynamically because of potential nonlinearity invalidating forced oscillation analyses, and (c) inertance in water column experiments can be virtually eliminated when water is displaced radially rather than axially during tidal breathing. This results from moving water in a manner which minimizes linear accelerations. Elastance, Inertance, Breathing bag design, Impedance testing

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1993
Accession Number
ADA273462

Entities

People

  • D. D. Joye
  • J. R. Clarke
  • N. A. Carlson

Organizations

  • Naval Medical Research Center

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical

DTIC Thesaurus Topics

  • Adiabatic Conditions
  • Biomedical Research
  • Classification
  • Coefficients
  • Conversion
  • Diameters
  • Education
  • Equations
  • Flow
  • Fluid Dynamics
  • Frequency
  • Governments
  • Navy
  • Numbers
  • Resonant Frequency
  • Security
  • Simulations

Readers

  • Cardiovascular Physiology
  • Control Systems Engineering.
  • Electrical Engineering