Fig. 3: First pop-in behavior in molecular dynamics simulation at 5 K on the (100) BCC Fe surface. | Nature Communications

Fig. 3: First pop-in behavior in molecular dynamics simulation at 5 K on the (100) BCC Fe surface.

From: Unique universal scaling in nanoindentation pop-ins

Fig. 3

Defect structure immediately (a) before and (b) after the first pop-in (central symmetry parameter coloring43), von Mises stress distribution immediately (c) before and (d) after the first pop-in, and (e) the corresponding load-displacement curve. f Spatial distribution of von Mises atomic-strain-invariant ηMises. Only atoms satisfying ηMises > 0.15 are displayed. g Spatial distribution of atomic displacement along loading direction ([100]), Δz, normalized by displacement burst Δh. Only atoms satisfying Δz/Δh > 0.06 are shown. The von Mises stress distribution is shown on a (010) plane passing through the indenter central axis. The movies of the dislocation pattern and the stress-distribution evolution during the simulation can be found in Supplementary Movie 1. See also Supplementary Note 15 for (111) BCC Fe and (100) FCC Cu.

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