Abstract
A new numerical model for the formation of adiabatic shear bands in thin-walled tubular torsion specimens has been developed by considering void nucleation and growth together with thermo-plastic deformation. Using this model, the distributions of the shear strain, strain rate and temperature in the gauge section can be obtained. This model was applied successfully to the explanation of non-central shear banding in low carbon steel and titanum. For materials with low thermal conductivity such as steel and titanium, geometrical imperfections play a more significant role than thermal softening in the location of shear bands.
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