ON THE RELATIONSHIP BETWEEN PHENOMENOLOGICAL MODELS FOR ELASTIC-VISCOPLASTIC METALS AND POLYMERIC LIQUIDS

The main objective of the present paper IS to use specific constitutiv e equations developed to model the elastic viscoplastic response of me tals and to show how a Leonov-type model can be obtained as a special case. This establishes a direct connection between the tensorial struc ture of the constitutive equations for elastic-viscoplastic metals and those for polymeric liquids. Recognizing this connection can be impor tant because it follows that many of the analytical tools developed by fluid mechanicians can be used directly to analyze a large class of d ifficult problems associated with the plastic flow of metals.