EXPERIMENTAL CHARACTERIZATION OF THE MECHANICAL PROPERTIES OF THE ABDOMINAL AORTIC ANEURYSM WALL UNDER UNIAXIAL TENSION

摘要: Although many researchers have made the assumption that abdominal aortic aneurysm (AAA) wall behaves as an incompressible and isotropic material, experimental evidence for it is insufficient. Hence, assumptions about incompressibility isotropy of AAA were verified through analysis stretch ratios samples excised from aneurysms walls. The calculated on basis a real-time geometric dimensions subjected to uniaxial tension. It was proved walls can be modelled material. Using histological techniques, concerning negligence shear stress in stresses indirectly validated. results incorporated into hyperelastic constitutive equation.