FINITE ELEMENT MODELING OF SUSTAINED +Gz ACCELERATION INDUCED STRESSES IN THE HUMAN VENTRICLE MYOCARDIUM

Authors
  1. Moore, J.
  2. Tabarrok, B.
  3. Fraser, W.
Corporate Authors
Victoria Univ, Victoria BC (CAN) Dept of Mechanical Engineering;Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
Due to reports of endocardial hemorrhaging and myofibrillar degradation in swines undergoing high sustained +Gz accelerations, questions arise as to the possibility of cardiac tissue damage in humans subjected to similar +Gz forces. Non-invasive cardiological techniques used during experiments seem too insensitive to provide sufficient data to determine the presence of any localized cardiac damage. In addition, these tests involve some risk to the subject. Hence, there exists the need for a model to predict possible tissue damage under high sustained +Gz accelerations. This paper presents the development of such a model for the analysis of +Gz induced stresses in the human ventricle myocardium. The model is based on the finite element method where the effects of finite displacements, large strains and non-linear nearly incompressible material behaviour are accounted for. TRUNCATED
Report Number
AGARD-CP-516-PAP-20 — @Paper presented at the Aerospace Medical Panel Symposium, Pensacola, Florida, USA, 29-30 April 1991; CONTAINED IN 92-00992
Date of publication
15 Oct 1991
Number of Pages
7
DSTKIM No
92-00988
CANDIS No
103881
Format(s):
Originator's fiche received by DSIS

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