J. Phys. IV France 110 (2003) 317
DOI: 10.1051/jp4:20020713

High strain rate model involving damage by adiabatic shear banding and related anisotropy

P. Longere¹, A. Dragon¹, H. Trumel¹, T. de Rességuier², X. Deprince³ and E. Petitpas<sup>3

1</sup>  Laboratoire de Mécanique et de Physique des Matériaux, UMR 6617 du CNRS, ENSMA, 1 avenue C. Ader, BP. 40109, 86962 Futuroscope-Chasseneuil cedex, France
²  laboratoire de Combustion et de Détonique, UPR 9028 du CNRS, ENSMA, 1 avenue C. Ader, BP. 40109, 86962 Futuroscope-Chasseneuil cedex, France
³  Centre de Recherches et d'Études Technologiques, GIAT Industries, 7 route de Guerry, 18023 Bourges cedex, France

Abstract
In the present work, we are interested in the three-dimensional description of the behaviour of a high strength material susceptible to adiabatic shear banding. The high strain rate constitutive model, based on irreversible thermodynamics, bas been formulated in order to be applied in the context of high velocity impact and penetration mechanics, and bas been implemented as `user material' in the finite element code LS-DYNA. Some preliminary numerical results are shown in the case of the loading of a plate hat specimen between Hopkinson pressure bars.

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