Cell size effect analysis of the effective Young's modulus of sandwich core

Gaoming Dai, Weihong Zhang

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

In this paper, different methods of predicting the effective Young's modulus of periodic cellular materials are taken into account and their abilities on revealing the size effect of the unit cell are analyzed. The bending energy method (BEM) is proposed to compare with the homogenization method (HM) and the G-A meso-mechanics method (G-A MMM). A variety of tests are carried out for different cell configurations and discussions are fully made to show its advantage. It is proved that the HM and G-A MMM results only compared to the situation of the scale factor n → ∞ and cannot reflect the size effect of the unit cell. The BEM results can perfectly reveal the underlying relationship between the effective Young's moduli and the cell size and they are consistent with the HM and G-A MMM results for n → ∞.

Original languageEnglish
Pages (from-to)744-748
Number of pages5
JournalComputational Materials Science
Volume46
Issue number3
DOIs
StatePublished - Sep 2009

Keywords

  • Bending energy method
  • Effective Young's modulus
  • G-A meso-mechanics method
  • Homogenization method
  • Periodic cellular materials
  • Size effect

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