Overview of adiabatic shearing

Authors:

  • Pettersson Annika
  • Petersson Jenny

Publish date: 2001-02-06

Report number: FOA-R--00-01743-310

Pages: 14

Written in: English

Abstract

Adiabatic shear has been the subject of study for many years mainly because it plays an important role in a number of dynamic phenomena, e.g. fragmentation, erosion, armour penetration and high speed machining. In this report an overview of the theory of adiabatic shear banding as found in a number of papers on the subject is presented. An adiabatic shear band is a strain-localisation phenomenon generally attributed to a plastic instability arising from thermal softening during adiabatic or quasi-adiabatic plastic deformation. The main conclusions of this overview are; that virtually any material can exhibit shear band formation if the work hardening is appropriately depressed, and that modelling of shear banding is near impossible due to the non-linear thermomechanical coupling of the governing equations and the non-linearity of commonly used constitutive equations. To study this phenomenon the best approach thus seems to be to combine experimental, analytical and numerical techniques.