Figure 6
The illustration consists of five labeled parts (a to e), each showing a differently shaped structural mesh with labeled nodes and internal connections. All meshes are rendered in black lines and overlaid on a light gray rectilinear base. Yellow lines fill the central regions to indicate internal connectivity. A legend in the bottom right indicates that circular purple markers represent “force nodes” and circular orange markers represent “supported nodes.” In part (a), the mesh is triangular and forms an asymmetrical, arched shell that curves upward nearly in the middle. The shape appears twisted, with the left side higher than the right. The triangular mesh is nonuniform, with denser triangles toward the center. Supported nodes, marked with orange triangles, are placed at the far left bottom edge, the lower right bottom edge, and at the mid-right side. Force nodes, marked with purple circles, are positioned at the top-left crest and a few near the lower-right side. The yellow internal lines follow the surface's curvature, forming a central, woven pattern. In part (b), the mesh features a regular quadrilateral grid, forming a beam-like rectangular shape with a smooth upward arch slightly to the right of the middle. The left and right vertical edges are straight and parallel. Supported nodes are symmetrically placed along both the left and right vertical faces, with four on each side, eight in total. Nine force nodes are concentrated on the lower part of the right end. The yellow lines occupy a rectangular central area. In part (c), the mesh is triangular and shaped like an hourglass, narrower at both ends and wider in the center. The mesh curves upward slightly, with its midsection bending inward. Eight supported nodes are positioned symmetrically along the left and right ends, four per side. Nine force nodes are scattered along its face, nearly to the left of the middle. The yellow internal structure resembles a diagonally connected network centered in the mesh. In part (d), the mesh is rectangular, forming a bend towards the right. Both ends are vertical and aligned. The supported nodes are evenly distributed, five along the left vertical face and eight along the right vertical face. Nine force nodes are positioned in a vertical column on the left side of the middle. Yellow lines form a central rectangular grid. In part (e), the mesh is also quadrilateral and rectangular, with a mild downward curve. The supported nodes appear as orange circles, eight on the left vertical faces. Nine force nodes are placed vertically along the right face just before the right end. The central yellow grid is similar in layout to that of d), filling the center of the rectangular mesh. Each part demonstrates variations in mesh geometry, curvature, and the layout of supported and loaded nodes while retaining a consistent structural pattern with a gray base mesh positioned horizontally in each part.Exemplary boundary conditions and displacement results for all types of loads in the dataset. In every model, 24 dofs are deleted, which corresponds to eight nodes for a fixed support. Yellow dashed lines on the deformed beams mark ΩRR. Source: Authors’ own work