Designing materials based on global properties has been a long-standing goal. By using metamaterials, local cellular structures could be designed to control global properties and surpass continuum material properties.
In this research. we introduce an inverse design workflow to design discrete mechanical metamaterial, to build macroscale structures that go beyond 3D printing. The fabrication process and its constraints are inherent in the concurrent micro-macro-optimization. We introduce first a top-down approach. Next, we generalize the previous by introducing a bottom-up approach where we use an inverse design workflow to create a universe library of parts. Comparative analysis will be presented to understand the benefit and cost of each approach in addition to fabricated pieces.