On azimuthal shear waves in a transversely isotropic viscoelastic mixture: Application to diffuse axonal injury

Abstract

Motivated by studies on a type of brain injury known as diffuse axonal injury, the dynamic azimuthal shearing of a mixture of a transversely isotropic viscoelastic material which is surrounded by a softer isotropic viscoelastic material is considered. It is demonstrated how the states of maximum strain and strain rate occur near the interface between the two materials. The dependency of these states of maximum strain and strain rate on the boundary conditions on the outer surface of the isotropic material is also discussed.