Ultra-light hierarchical meta-materials on a body-centred cubic lattice

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Daniel Rayneau-Kirkhope
  • Yong Mao
  • Robert Farr

Research units

  • Nottingham University
  • London Institute for Mathematical Sciences

Abstract

Modern fabrication techniques offer the freedom to design and manufacture structures with complex geometry on many lengthscales, offering many potential advantages. For example, fractal/hierarchical struts have been shown to be exceptionally strong and yet light (Rayneau-Kirkhope D. et al., Phys. Rev. Lett., 109 (2012) 204301). In this letter, we propose a new class of meta-material, constructed from fractal or hierarchical struts linking a specific set of lattice points. We present a mechanical analysis of this meta-material resulting from a body-centred cubic (BCC) lattice. We show that, through the use of hierarchy, the material usage follows an enhanced scaling relation, and both material property and overall efficiency can be optimised for a specific applied stress. Such a design has the potential of providing the next generation of lightweight, buckling-resistant meta-materials. editor's choice Copyright (C) EPLA, 2017

Details

Original languageEnglish
Article number14001
Pages (from-to)1-6
Number of pages6
JournalEPL
Volume119
Issue number1
Publication statusPublished - Jul 2017
MoE publication typeA1 Journal article-refereed

    Research areas

  • NEGATIVE POISSONS RATIO, MECHANICAL METAMATERIALS, STIFFNESS, NANOSCALE, NANOTUBES

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