Fig. 4: Lightweight irregular architected materials optimized for multifunctional stress modulation.
a A squared design domain containing a passive material in the center subjected to two different load cases with applied displacements, ux = 1.0 mm and uy = 1.0 mm, respectively. The stress control region is around the passive material. b, c The stress amplification and inversion effects achieved in two load cases, respectively. d, e The displacement fields in the loading direction in two load cases obtained from the finite element analysis (FEA), respectively. f, g Corresponding displacement fields measured in experiments. h The virtual growing process of the optimized material piece. i A physical sample manufactured via 3D printing (m-SLA).
