Figure 7
The panels show sequential compression views of lattice structures tested along x-axis, y-axis, and z-axis directions at strain levels of 0 percent, 15 percent, 30 percent, and 45 percent. Panel A presents compression along the x-axis, where the wavy lattice walls progressively deform, and local cracking becomes visible in the magnified inset at 45 percent strain. Panel B shows compression along the y-axis with increasing buckling and distortion of the lattice geometry as strain increases, followed by crack formation in the enlarged inset view. Panel C displays compression along the z-axis, where vertical wavy structures compress and collapse more irregularly, with visible cracks and localised damage at higher strain levels. Red dashed boxes indicate magnified regions used to highlight crack initiation and propagation. A 3-dimensional lattice model on the right identifies the build direction and coordinate axes for x-axis, y-axis, and z-axis orientations.The deformation of Onyx gyroid structures at various strain levels: (a) X direction; (b) Y direction; and (c) Z direction
Source: Authors’ own work