Abstract
An octet-truss lattice material offers promising potential alternatives for foams or honeycomb structures due to its high specific properties. However, previous studies mainly focused on the elastic properties in the principal directions. The equivalent Young’s moduli of an octet-truss lattice along arbitrary directions are studied systematically. Based on tensor transformations, the equivalent Young’s moduli are obtained along different loading directions, and they are intensively dependent on the directions of the load. And the loading direction of the maximum equivalent Young’s modulus is always in a flat surface perpendicular to the xy surface at α = (45+90n) deg, and β = ±35.26°. In addition, the equivalent Young’s moduli increase with the growth of the slender ratios along all directions.
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