Statics and dynamics of an aortic segment considering residual stresses

Ivan Breslavsky, Marco Amabili, Eleonora Tubaldi, Annie Ruimi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationBiomedical and Biotechnology Engineering
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume3
ISBN (Electronic)9780791858363
DOIs
Publication statusPublished - 1 Jan 2017
EventASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017 - Tampa, United States
Duration: 3 Nov 20179 Nov 2017

Other

OtherASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017
CountryUnited States
CityTampa
Period3/11/179/11/17

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ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Breslavsky, I., Amabili, M., Tubaldi, E., & Ruimi, A. (2017). Statics and dynamics of an aortic segment considering residual stresses. In Biomedical and Biotechnology Engineering (Vol. 3). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2017-72451