Figure 15
The left panel labeled “(a)” and the right panel labeled “(b)” each show a cube with a central cavity and smooth curved internal boundaries, overlaid with contour bands representing “P E E Q (Average: 75 percent)”. A vertical color legend beside each cube is shown. In the left panel, it ranges from 0.000 e plus 00 to positive 9.500 e minus 02, with multiple contour levels, from blue (lower), cyan, green, yellow, orange, and red (higher), marked in scientific notation, where the top region shows a broad orange band with two distinct red patches near the upper left and right corners, forming localized high-value zones, while below the cavity the mid-level bands form a narrow, pinched shape at the center with small irregular contour islands, and the bottom region shows a deep blue zone with a pointed downward extension. In the right panel, it ranges from 0.000 e plus 00 to positive 9.500 e minus 02, with similar contour levels and color progression, where the top region forms a more continuous and uniform orange band without isolated red patches, extending smoothly across the upper surface, while below the cavity the mid-level bands form a wider and more symmetric curved shape without small isolated regions, and the bottom region shows a broader blue zone with a rounded base rather than a pointed extension.Contour plots of equivalent plastic strain in the SC porous structures with 20% porosity and different values of (a) and (b) , subjected to loading at a strain rate of . The applied tensile strain is at 0.05