Abstract
Continuum descriptions of the microstructure in dual-phase materials are introduced by fabric tensors computed from the mean intercept length (MIL) method. The fabric tensor can be decomposed into the isotropic and deviatoric components to represent the dilatation and orientation preferred properties, respectively. Systematic numerical simulations on micromechanics models and simplified microstructures are conducted. It is confirmed that the anisotropic elastic behavior can be quantitatively predicted with the help of deviatoric components. This component can be further implemented into the constitutive model to describe the time- and load-dependent evolution of the material state variable. Anisotropy induced by morphology and anisotropic constituents is discussed. The results match well with computational experiments, showing the promising application potential of the tensorial representation method and the microstructure-based mechanical property prediction model.
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