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A two-dimensional micromechanical model of anisotropic elastic-microplastic damage evolution
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A two-dimensional micromechanical model using oriented Dugdale microcracks captures anisotropic elastic-microplastic damage evolution, predicting macroscopic nonlinear stress-strain behavior and damage anisotropy through homogenization. This damage mechanics framework enables more accurate structural lifetime predictions for materials undergoing progressive microcrack-driven degradation.
A two-dimensional micromechanically based model of anisotropic elastic-microplastic damage evolution is presented. The deterioration of the material is represented by equally oriented Dugdale microcracks. Assuming a physically plausible crack growth law a consequent homogenization gives the macroscopic nonlinear stress-strain behavior during a loading process as well as the evolution of the corresponding anisotropic damage and typical characteristics during a final unloading process.
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