Summary
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.
Übersicht
Es wird ein zweidimensionales mikromechanisch begründetes Modell anisotroper elastischmikroplastischer Schädigungsentwicklung dargestellt. Die Materialschädigung wird durch gleich-orientierte Dugdale-Mikrorisse modelliert. Unter der Annahme eines physikalisch plausiblen Rißwachstumsgesetzes liefert eine entsprechende Homogenisierung sowohl das makroskopische nichtlineare Spannungs-Dehnungs-Verhalten während eines Belastungsprozesses als auch die Evolution der entsprechenden anisotropen Schädigung sowie typische Charakteristika beim Entlastungsprozeß.
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Becker, W., Gross, D. A two-dimensional micromechanical model of anisotropic elastic-microplastic damage evolution. Ing. arch 58, 295–304 (1988). https://doi.org/10.1007/BF00535939
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DOI: https://doi.org/10.1007/BF00535939