Enhanced Auxetic and Viscoelastic Properties of Filled Reentrant Honeycomb

Yun Che Wang, Hsiang Wei Lai, Xuejun James Ren

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

Honeycombs or foams with reentrant microstructures exhibit effective negative Poisson's ratio. Although they are light weight due to inherently empty space, their overall stiffness and damping are somewhat limited. With judiciously chosen filler material to fill the voids in star-shaped honeycomb, it is numerically demonstrated its auxeticity may be enhanced. By combining the filler and skeleton, the hierarchical composite materials are constructed. The magnitude of the enhancement depends on inner and outer filler's modulus mismatch, as well as the types of filling. Filler's auxeticity also largely enhances overall auxeticity of the outer- and all-filled honeycomb. In addition, for outer-filled honeycomb, its effective viscoelastic modulus and damping are significantly increased, while maintaining relatively light weight, due to local stress concentration.

原文English
文章編號1900184
期刊Physica Status Solidi (B) Basic Research
257
發行號10
DOIs
出版狀態Published - 2020 十月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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