Abstract:
Quantitative measurements have been made of the time dependent normal
stress distributions and torques which are necessary to maintain a state of
torsion in:
(i) a solid right circular cylinder of rubber,
(ii) rubber contained between a cone and touching flat plate.
The measurements on the solid rubber cylinder, under quasi-elastic
conditions cannot be described by the kinetic theory of elasticity. There
are considerable experimental difficulties involved in measurements on the
cone and plate system but these results also suggest an inadequacy in the
ability of the kinetic theory to describe finite deformations in rubbers.
