Arterial walls are a multilayer structures with nonlinear material characteristics. Furthermore, residual stresses exist in unloaded state (zero-pressure condition) and they affect arterial behavior. To investigate these phenomena a number of theoretical and numerical studies were performed, however no experimental validation was proposed and realized yet. We cannot get rid of residual stresses without damaging the arterial segment. In this paper we propose a novel experiment to validate a numerical model of artery with residual stresses. The inspiration for our study originates from experiments made by Dobrin on dogs’ arteries (1999). We applied the idea of turning the artery inside out. After such an operation the sequence of layer is reversed and the residual stresses are re-ordered. We performed several pressure-inflation tests on human Common Carotid Arteries (CCA) in normal and inverted configurations. The nonlinear responses of arterial behavior were obtained and compared to the numerical model. Computer simulations were carried out using the commercial software which applied the finite element method (FEM). Then, these results were discussed.
REFERENCES(15)
1.
Bergel D.H. (1960): The viscoelastic properties of the arterial wall. - Ph.D., 1960, University of London.
Ciszek B., Cieślicki K., Krajewski P. and Piechnik S.K. (2013): Critical pressure for arterial wall rupture in major human cerebral arteries. - Stroke, vol.44, No.11, pp.3226-3228.
Delfino A., Stergiopulos N., Moore Jr J.E. and Meister J-J. (1997): Residual strain effects on the stress field in a thick wall finite element model of the human carotid bifurcation. - Journal of Biomechanics, vol.30, No.8, pp.777-786.
Gasser T.C., Ogden R.W. and Holzapfel G.A. (2006): Hyperelastic modelling of arterial layers with distributed collagen fibre orientations. - Journal of the Royal Society Interface, vol.3, No.6, pp.15-35.
Holzapfel G.A. and Gasser T.C. (2007): Computational stress-deformation analysis of arterial walls including highpressure response. - Int. J. Cardiology, vol.116, pp.78-85.
Piechna A. and Cieślicki K. (2013): Numerical Analysis of Residual Stress Effects on the Stress Field in a Model of Common Carotid Artery at Wide Range of Transmural Pressure. - Insbruck, From Proceeding: (791) Biomedical EngineeringRachev A. and Greenwald S.E. (2003): Residual strains in conduit arteries. - J. Biomech., vol.36, No.5, pp.661-70.
Rachev A. (1997): Theoretical study of the effect of stress-dependent remodeling on arterial geometry under hypertensive conditions. - Journal of Biomechanics, vol.30, No.8, pp.819-827.
Sommer G. and Holzapfel G.A. (2012): 3D constitutive modeling of the biaxial mechanical response of intact and layer-dissected human carotid arteries. - Journal of the Mechanical Behavior of Biomedical Materials, vol.5, No.1, pp.116-128.
Sommer G., Regitnig P., Koltringer L. and Holzapfel G.A. (2010): Biaxial mechanical properties of intact and layerdissected human carotid arteries at physiological and supraphysiological loadings. - Am. J. Physiol. Heart Circ. Physiol., vol.298, pp.898-912.
Waffenschmidt T. and Menzel A. (2014): Extremal states of energy of adouble-layered thick-walled tube-application to residually stressed arteries. - Journal of the Mechanical Behavior of Biomedical Materials, vol.29, pp.635-654.
Wuyts F.L., Vanhuyse V.J., Langewouters G.J., Decraemer W.F., Raman E.R. and Buyle S. (1995): Elastic properties of human aortas in relation to age and atherosclerosis: a structural model. - Physics in Medicine and Biology, vol.40, No.10, 1577.
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