Abstract

Periodic cellular materials (PCMs) are lightweight composites of space and metal that can be fabricated using simple sheet forming methods. This study uses both finite element and experimental methods to examine the effects of perforation geometry on the range of accessible micro-truss architectures and the resulting inelastic buckling resistance during uniaxial compression of AA3003 micro-truss cores. By modifying the conventional perforation geometry, it was possible to change the plastic strain distribution between the hinge and strut region, opening up new possibilities for microstructural design in PCMs.

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