Going beyond the HGO material model
to study arterial walls.
The Holzapfel-Gasser-Ogden (HGO) constitutive model is
effective at describing the anisotropic mechanical response
of artery walls. But to reliably model the behaviour of
arterial walls after sudden changes in axial stress, you need
to go beyond the HGO material model and use one that is
hyperviscoelastic.
The COMSOL Multiphysics® software is used for simulating
designs, devices and processes in all fields of engineering,
manufacturing and scientific research. See how you can apply
it to biomechanics modelling.
comsol.blog/viscoelasticity
Visualisation of collagen fibres in
the media (red) and adventitia
(blue) layers of an artery wall.
Radial stress distribution is shown.