The idealized inverse-opal lattice is a network of slender struts that has cubic symmetry. We analytically investigate the elastoplastic properties of the idealized inverse-opal lattice. The analysis reveals that the inverse-opal lattice is bending-dominated under all loadings, except under pure hydrostatic compression or tension. Under hydrostatic loading, the lattice exhibits a stretching dominated behavior. Interestingly, for this lattice, Young's modulus and shear modulus are equal in magnitude. The analytical estimates for the elastic constants and yield behavior are validated by performing unit-cell finite element (FE) simulations. The hydrostatic buckling response of the idealized inverse-opal lattice is also investigated using the Floquet-Bloch wave method. Copyright © 2018 by ASME.

Syed Nizamuddin Khaderi

Department of Mechanical and Aerospace Engineering

B. Pal

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Journal	Journal of Applied Mechanics, Transactions ASME
Publisher	American Society of Mechanical Engineers (ASME)
ISSN	00218936