Material parameter identification of arterial wall layers from homogenised stress–strain data

Pavel Skacel and Jiri Bursa

Computer Methods in Biomechanics and Biomedical Engineering, 2011, vol. 14, issue 01, 33-41

Abstract: Multilayer structure of the artery can have significant effects on the resulting mechanical behaviour of the artery wall. Separation of the artery into individual layers is sometimes performed to identify the layer-specific parameters of constitutive model proposed by Holzapfel, Gasser and Ogden (HGO model). Inspired by this single-layer model, a double-layer model was formulated and used for identification of material parameters from homogenised stress–strain data (of non-separated artery wall). The paper demonstrates that the layer-specific parameters of the double-layer constitutive model can be identified without the need of artery separation. The resulting double-layer model can credibly describe the homogenised stress–strain behaviour of the real artery wall including large-strain stiffening effects attributed to multilayer nature of the artery.

Date: 2011
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DOI: 10.1080/10255842.2010.493516

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