Violent elastic-plastic wave interactions

Abstract eng:
In isentropic compression experiments, millimetre thick metal samples are subjected to pressures on the order of 10 2 102 GPa, while the yield strength of the material can be as low as 10’1 GPa. In such regimes the metal can be treated as a barotropic compressible fluid in which the strength, measured by the ratio of the yield stress to the applied stress, is negligible to lowest order. We present a new model of elastoplasticity which incorporates the effects of strength as a small perturbation to the leading order model based on barotropic

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