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Analysis of residual stresses in arterial wall

By Kamil Novák


This thesis deals with computational modeling of the influence of residual stresses in idealized geometry of blood vessels and subsequent application of acquired knowledge to abdominal aortic aneurysm. In the terms of quality of the computational model, we reduced the uncertainties that are included in the computational model without considering the influence of residual stresses. The basic assumption of homogenization significant peaks of the stress between inner and outer vessel wall was met for each level of the computational model Methods that have been used are: deformation method (opening angle method), inverse mechanics of large deformations, fictitious temperature – for linear elastic material and hyperelastic material defined by the constitutive model. Numerical verification was carried out using program ANSYS

Topics: Residual stress; nelineární problém; velké deformace; aorta; Zbytkové napětí; large deformations; arterial wall; výpočtové modelování; non-linear problem; hyperelastic material; computational modeling; stěna tepny; hyperelastický materiál
Publisher: Vysoké učení technické v Brně. Fakulta strojního inženýrství
Year: 2013
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