Steady Shearing in a Viscoplastic Solid.
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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Steady shearing solutions are found as quadratures within the context of a simple theory of viscoplasticity which includes thermal softening and heat conduction. The solutions are illustrated by numerical examples for four commonly used versions of viscoplasticity, where each version has first been calibrated against the same hypothetical data set. It is found that, although they give results that differ in detail, the four flow laws predict qualitatively similar morphology and appear to give rough agreement with physical measurements of adiabatic shear bands. The conjecture is made that steady solutions correspond to central boundary layers for the full unsteady theory.