Optimal and manufacturable two-dimensional, Kagomé-like cellular solids

S. Hyun, S. Torquato

Research output: Contribution to journalArticle

104 Scopus citations

Abstract

We used the topology optimization technique to obtain two-dimensional, isotropic cellular solids with optimal effective elastic moduli and effective conductivity. The overall aim was to obtain the best (simplest) manufacturable structures for these effective properties, i.e., single-length-scale structures. Three different but simple periodic structures arose due to the imposed geometric mirror symmetries: lattices with triangular-like cells, hexagonal-like cells, or Kagomé-like cells. As a general rule, the structures with the Kagomé-like cells provided the best performance over a wide range of densities, i.e., for 0 ≤ φ <0.6, where φ is the solid volume fraction (density). At high densities (φ > 0.6), Kagome-like structures were no longer possible, and lattices with hexagonal-like or triangular-like cells provide virtually the same optimal performance. The Kagomé-like structures were found to be a new class of cellular solids with many useful features, including desirable transport and elastic properties, heat-dissipation characteristics, improved mechanical strength, and ease of fabrication.

Original languageEnglish (US)
Pages (from-to)137-144
Number of pages8
JournalJournal of Materials Research
Volume17
Issue number1
DOIs
StatePublished - Jan 2002

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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