Cardiovascular system and artificial replacements
Research on tissues and body structures and biomaterials
Influence of inhomogeneities on the mechanical behavior of blood vessels - bifurcations
Project description:
Comparison of strain fields in the circular hole surrounding - the planar sample. (Left: FEM Ansys, right: Digital Image Correlation - Istra 4D.)
Tangential stress around the circular hole (r = 3mm) in latex tube (R = 20mm). FEM - Ansys
Uniaxial test of the elastic plate with a hole, use of 2D image correlation (System Q-450)
Natural vascular branching (or bypass) represents a stress concentrator, which changes stress and strain field in its neighbourhood. The experiment, realized as a combination of an inflation and uniaxial tension, FEM and analytical analysis compare the distribution of these variables depending on the specific geometry of branching.
Timetable of the project: planar sample with circular hole -> tubular sample with different types of boundary conditions on the circular hole -> real vascular branching. Vascular tissue is modeled as nonlinear, hyperelastic, anisotropic and volume incompressible material.
Jakub Kronek MSc. ; Lukáš Horný ; Hynek Chlup ; Eva Gultová MSc. ; Jan Veselý MSc. ; Rudolf Žitný,