Figure 1
A diagram shows two cube models with internal cavities and surface cut features labeled “(a)” and “(b)”.The left diagram labeled “(a)” shows a solid cube with smooth concave cavities visible on the corners and a circular opening on each face, with a dashed inner outline highlighted. The right diagram labeled “(b)” shows the portion of the cube corresponding to the region under the dashed outline, presented as a semi-transparent cube with internal curved cavities extending inward from multiple faces and cut-out sections visible at edges and corners.

Schematics of the periodic closed-cell porous structure: (a) A regular FCC void arrangement, and (b) one-eighth of the cubic unit domain used in the actual numerical modeling

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