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A one-dimensional micromechanical model of elastic-microplastic damage evolution
Summary
A one-dimensional micromechanical model based on Dugdale microcracks predicts elastic-microductile damage evolution, capturing both macroscopic hardening and softening behavior during loading and continuous damage accumulation during unloading. This physically-based damage model provides a foundation for predicting progressive failure in ductile materials subjected to monotonic loading.
A one-dimensional micromechanically based model of elastic-microductile damage evolution is presented. The deterioration of the material is represented by Dugdale micro-cracks. Postulating a physically plausible crack growth law a consequent homogenisation predicts the macroscopic hardening and softening behavior during a loading process as well as the corresponding continuous damage evolution and typical characteristics during a final unloading process.