Abstract
A new micromechanics constitutive modal for pure dilatant transformation plasticity of structure ceramics is proposed in this paper. Based on the thermodynamics, micromechanics and microscale t ~ m trans- formation mechanism analysis of the TZP and PSZ ZrO2-containing ceramics, an analytic expressions of the Helmholtz and complementary free energy of the constitutive element for the case of pure dilatant transforma- tion is derived for the first time in a self-consistent manner. By the analysis of energy dissipation in the for- Ward and reverse transformations, the micromechanics constitutive law is derived in the framework of Hill-Rice's infernal variable constitutive theory.
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