Numerical experiments on adiabatic shear band formation in one dimension
- 31 December 1992
- journal article
- Published by Elsevier BV in International Journal of Plasticity
- Vol. 8 (6), 657-693
- https://doi.org/10.1016/0749-6419(92)90023-6
Abstract
Adiabatic shear band formation in an elastic, thermoviscoplastic, simple material is studied in the context of unidirectional shearing of a slab. The effect of varying the thermal softening behavior of the material on localization strain and postlocalization morphology is studied for a rigid, perfectly plastic material; the material parameters are appropriate for a high-strength steel. In this case it is demonstrated that localization of the strain rate can be transient. A coupling between linear-elastic response and the basic thermoviscoplastic localization mechanism is explored in the absence of strain hardening. Last, the flow law is modified to include strain hardening in order to simulate a high-rate torsion test on OFHC copper. In this case localization is initiated by thermal boundary layer diffusion and the solution takes on a complex, apparently nonperiodic, postlocalization morphology quite different from that in the perfectly plastic cases.Keywords
This publication has 22 references indexed in Scilit:
- Adiabatic shear banding in elastic-viscoplastic nonpolar and dipolar materialsInternational Journal of Plasticity, 1990
- A Mechanism for Shear Band Formation in the High Strain-Rate Torsion TestJournal of Applied Mechanics, 1990
- High Strain Rate Behavior of MetalsApplied Mechanics Reviews, 1990
- Adiabatic Shear BandsApplied Mechanics Reviews, 1990
- Deep EarthquakesScientific American, 1989
- EFFECT OF MATERIAL CHARACTERISTIC LENGTH ON THE INITIATION, GROWTH AND BAND WIDTH OF ADIABATIC SHEAR BANDS IN DIPOLAR MATERIALSLe Journal de Physique Colloques, 1988
- The initiation and growth of, and the interaction among, adiabatic shear bands in simple and dipolar materialsInternational Journal of Plasticity, 1987
- On stress collapse in adiabatic shear bandsJournal of the Mechanics and Physics of Solids, 1987
- The initiation and growth of adiabatic shear bandsInternational Journal of Plasticity, 1985
- The mean dynamic yield strength of copper and low carbon steel at elevated temperatures from measurements of the “mushrooming” of flat-ended projectilesInternational Journal of Mechanical Sciences, 1968