The Effects of +Gz Loading Condition on the Human Heart

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Authors
  1. Behdinan, K.
  2. Cresnik, P.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN);Ryerson Univ, Toronto ONT (CAN) Dept of Mechanical Aerospace Industrial Engineering
Abstract
The computer modeling of the human body and its chemical, electrical and mechanical processes have many promising aspects. The present research is concerned with the finite element (FE) modeling the human heart in order to determine its response to large, positive gravitational acceleration (+Gz). In order to produce realistic results for such an analysis, there are those fundamental criteria that need to be achieved: 1) accurate material properties; 2) exact geometry; and 3) reasonable boundary conditions. Meeting these specifications should result in a viable computer model. The present model contains stepping-stones to what would be considered an 'ideal' Fe model if the above criteria were met. The model contains the complete left ventricle geometry and nonlinear material parameters. The model was subjected to 1+Gz and 1.2+Gz accelerations to test the nonlinear material and nonlinear geometrical behaviour. The results show that the model can undergo, large deformations in the onlinear regime without failing.

Il y a un résumé en français ici.

Keywords
Gz loads
Report Number
DRDC-TORONTO-CR-2003-026 — Contractor Report
Date of publication
18 Jan 2003
Number of Pages
30
DSTKIM No
CA022094
CANDIS No
518914
Format(s):
Hardcopy

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