On a proposal for a continuum with microstructure

摘要: A recently proposed model for a continuum with microstructure is further substantiated by identifying the dislocations. In particular, viewed as superimposed state composed of perfect lattice state, an immobile dislocation and mobile state. It assumed that each evolves continuously in space-time transitions from one to another take place spontaneously according balance laws effective mass momentum. When constitutive equations are subjected requirements invariance, familiar statements dynamics deduced. plastic strain yield identified terms parameters characterizing states, flow rules surfaces produced. The capability predict not only Tresca Von-Mises behavior but also phenomena such kinematic hardening, different responses tension compression, latent Bauschinger effect, shown. Finally, appropriateness our creep, cyclic plasticity, fatigue, illustrated.