MODELING ADIABATIC HEATING DURING HIGH-SPEED DEFORMATION

Deformation with high strain rates is usually accompanied by a signifi cant heating of the sample caused by (nearly) adiabatic conditions. Th e production of heat and the storage of internal energy is considered here in detail based on a microstructural model. It is shown that the production of vacancies due to the plastic deformation has a strong in fluence on the temperature rise. Furthermore, an example for the imple mentation of the evolution equations of dislocation densities and vaca ncies in the finite element program LS-DYNA3D is presented.