Abstract
The effect of grit geometry on the ability to precision grind brittle materials such as glass in a ductile manner is investigated using numerical simulations. The finite element code NIKE2D is used to simulate isolated indentations for various different indenter (grit) geometries and different indentation depths. A scalar function of the stress field is used to characterize whether or not a given state could lead to fracture of the glass under the indenter. It is found that while there are clear differences between the results for different indenter geometries, these differences are not so great that one would expect grit geometry to be a critical factor in the ability to grind in the ductile regime. 5 refs., 13 figs.
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