TY - GEN
T1 - Statics and dynamics of an aortic segment considering residual stresses
AU - Breslavsky, Ivan
AU - Amabili, Marco
AU - Tubaldi, Eleonora
AU - Ruimi, Annie
N1 - Funding Information:
The authors acknowledge the financial support of the NSERC Discovery Grant, Canada Research Chair and the Qatar National Research Fund NPRP 7-032-2-016.
Publisher Copyright:
© Copyright 2017 ASME.
PY - 2017
Y1 - 2017
N2 - Static and dynamic analysis of a circular cylindrical shell that models a segment of human aorta is carried out in this study. The shell is assumed to have three hyperelastic layers with residual stresses. Material data and residual stresses are taken from the literature from human toracic descending aorta. The material model is the Holzapfel-Gasser-Ogden (HGO). Dissipation is modelled by viscoelasticity. The dynamic load is given by a pulsating pressure reproducing the physiological pressure during the heart beating. The inertial effect of the contained blood fluid is taken into account. Under the static pressure, the initially soft shell becomes much stiffer, which is a common feature of soft biological tissues. The nonlinear dynamics is not particularly complicated, due to the significant damping.
AB - Static and dynamic analysis of a circular cylindrical shell that models a segment of human aorta is carried out in this study. The shell is assumed to have three hyperelastic layers with residual stresses. Material data and residual stresses are taken from the literature from human toracic descending aorta. The material model is the Holzapfel-Gasser-Ogden (HGO). Dissipation is modelled by viscoelasticity. The dynamic load is given by a pulsating pressure reproducing the physiological pressure during the heart beating. The inertial effect of the contained blood fluid is taken into account. Under the static pressure, the initially soft shell becomes much stiffer, which is a common feature of soft biological tissues. The nonlinear dynamics is not particularly complicated, due to the significant damping.
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U2 - 10.1115/IMECE2017-72451
DO - 10.1115/IMECE2017-72451
M3 - Conference contribution
AN - SCOPUS:85040972256
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Biomedical and Biotechnology Engineering
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017
Y2 - 3 November 2017 through 9 November 2017
ER -