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Mechanical analysis of the ring opening test applied to human ascending aortas

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Listed:
  • Claudio M. García-Herrera
  • Claudio A. Bustos
  • Diego J. Celentano
  • Roberto Ortega

Abstract

This work presents experiments, modelling and numerical simulation aimed at describing the mechanical response of human ascending aortas in the ring opening test. The objective is to quantify, from the opening angles measured in the test, the residual stress distribution along the artery wall and, afterwards, how this stress pattern changes when the artery is subjected to standard physiological pressures. The cases studied correspond to four groups including both healthy and pathological arteries. The tissues are characterized via tensile test measurements that enable to derive the material parameters of two constitutive models adopted in the present analysis. Overall, the numerical results obtained for all groups were found to be a useful data that allow to estimate the residual stress and their influence on the vessels under normal and hypertension physiological conditions.

Suggested Citation

  • Claudio M. García-Herrera & Claudio A. Bustos & Diego J. Celentano & Roberto Ortega, 2016. "Mechanical analysis of the ring opening test applied to human ascending aortas," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 19(16), pages 1738-1748, December.
    • Handle: RePEc:taf:gcmbxx:v:19:y:2016:i:16:p:1738-1748
    DOI: 10.1080/10255842.2016.1183125
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    References listed on IDEAS

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    1. Claudio M. García-Herrera & Diego J. Celentano & Marcela A. Cruchaga, 2013. "Bending and pressurisation test of the human aortic arch: experiments, modelling and simulation of a patient-specific case," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 16(8), pages 830-839, August.
    2. Claudio García-Herrera & Diego Celentano & Marcela Cruchaga & Francisco Rojo & José Atienza & Gustavo Guinea & José Goicolea, 2012. "Mechanical characterisation of the human thoracic descending aorta: experiments and modelling," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 15(2), pages 185-193.
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