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Enhanced Auxetic and Viscoelastic Properties of Filled Reentrant Honeycomb

Wang, YC, Lai, HW and Ren, XJ (2019) Enhanced Auxetic and Viscoelastic Properties of Filled Reentrant Honeycomb. Physica Status Solidi (B) Basic Research. ISSN 0370-1972

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Abstract

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. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Item Type: Article
Uncontrolled Keywords: 0204 Condensed Matter Physics, 0206 Quantum Physics, 1007 Nanotechnology
Subjects: T Technology > T Technology (General)
T Technology > TH Building construction
Divisions: Maritime & Mechanical Engineering
Publisher: Wiley
Date Deposited: 21 Jan 2020 10:38
Last Modified: 21 Jan 2020 10:38
DOI or Identification number: 10.1002/pssb.201900184
URI: http://researchonline.ljmu.ac.uk/id/eprint/12059

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