Interlocked hierarchical lattice materials reinforced by woven textile sandwich composites

Hierarchical structures are predicted to have ultra-light weight and superior mechanical properties, including excellent weight efficiency and anti-buckling capability. Adopting interlocking method, a new hierarchical lattice truss material reinforced by woven textile sandwich composite was designed, manufactured and tested. With sandwich walls, the hierarchical lattice material is ultra-light and renders high weight efficiency. A plastic model was suggested based on tested failure maps to reveal the plastic deformation of the hierarchical material. Mass efficiency and specific energy absorption of the hierarchical lattice truss material were analyzed and compared with typical metallic lattice truss materials. The glass fiber reinforced hierarchical lattice truss material has been proved to be a potential light weight-efficient structure.