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An elastic-plastic-cracking model for finite element analysis of indentation cracking in brittle materials. (English) Zbl 1001.74108
Summary: An elastic-plastic-cracking (EPC) constitutive model is developed and incorporated into commercial explicit finite element package ABAQUS to analyze fracture characteristics of brittle materials subjected to indentation loads. The analysis indicated that the EPC model can capture the development of median cracks during the loading phase and the development of lateral cracks during the unloading phase of Vickers indentation cycle. The influence of material properties on induced damage zone characteristics is analyzed by defining a non-dimensional brittleness parameter. The model predictions of hardness as well as load-depth relationship during an indentation cycle agree well with experimental trends presented in the literature.

74R20 Anelastic fracture and damage
74R10 Brittle fracture
74S05 Finite element methods applied to problems in solid mechanics
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