Understanding mechanical behavior of metallic foam with hollow struts using the hollow pentagonal dodecahedron model

Rui Dai, Meng Wang, Dini Wang, Zengrong Hu, Matthew D. Green, Qiong Nian

Research output: Contribution to journalArticle

Abstract

Nickel (Ni) foam with hollow struts, as one type of ultralight stochastic cellular material, can be simply manufactured by electroplating on a thermally or chemically removable template. A fundamental understanding is required to create a consistent lattice model with capability to capture its mechanical behavior. Herein, an unprecedented hollow pentagonal dodecahedron (HPD) model is proposed with a novel 3D packing architecture. HPD model reveals the scaling of Young's modulus (E) to relative density (ρ′) in the factor of 2, which agrees well with uniaxial compression tests. This simplified model paves a way to investigate the cellular material with hollow struts.

Original languageEnglish (US)
Pages (from-to)114-119
Number of pages6
JournalScripta Materialia
Volume182
DOIs
StatePublished - Jun 2020

Keywords

  • Cellular material
  • Elastic modulus
  • Hollow strut
  • Metallic foam
  • Pentagonal dodecahedron

ASJC Scopus subject areas

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

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