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Study of architectural responses of 3D periodic cellular materials

Cited 7 time in Web of Science Cited 8 time in Scopus
Authors

Cho, Yigil; Ahn, Tae-Hong; Cho, Hoon-Hwe; Shin, Joong-Ho; Moon, Jun Hyuk; Yang, Shu; Choi, In Suk; Han, Heung Nam; Li, Ju

Issue Date
2013-09
Publisher
Institute of Physics Publishing
Citation
Modelling and Simulation in Materials Science and Engineering, Vol.21 No.6, p. 065018
Abstract
The functional properties of periodic cellular solids such as photonic and phononic crystals, nanocrystal superlattices and foams may be tuned by an applied inhomogeneous mechanical strain. A fundamental methodology to analyse the structure of periodic cellular materials is presented here and is compared directly with indentation experiments on three-dimensional microframed polymer photonic crystals. The application of single-continuum-scale finite-element modelling (FEM) was impossible due to the numerous cells involved and the intricate continuum geometry within each cell. However, a method of dual-scale FEM was implemented to provide stress and displacement values on both scales by applying an upper scale continuum FEM with reference to the lower scale continuum FEM to provide coarse-grained stress-strain relationships. Architecture and orientation dependences of the periodic porous materials on the macro-/microscopic responses were investigated under different loading conditions. Our study revealed a computational tool for exploring elastic strain engineering of photonic crystals and, more broadly, may help the design of metamaterials with mechanical controllability.
ISSN
0965-0393
URI
https://hdl.handle.net/10371/203307
DOI
https://doi.org/10.1088/0965-0393/21/6/065018
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  • College of Engineering
  • Department of Materials Science & Engineering
Research Area High Temperature Alloys, High Strength , Nano Mechanics and Nano Structure Design for Ultra Strong Materials, Shape and Pattern Design for Engineering Materials

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