By various experiments, it has been found that the response
of real materials to external forces is, in general,
nonlinear in character. In classical continuum mechanics,
the use of ordinary measures of strain have forced the
constitutive equations to take complex forms and since the
orders of these measures are...
The simplest existing properly invariant theory for anisotropic
fluids, proposed by Ericksen, includes equations governing the nature
of a preferred direction. An analysis of simple shearing motion given
by Ericksen suggested that this type of theory might be applicable to
some fluids which are commonly treated as isotropic and might...