A novel planar auxetic phononic crystal with periodic cookie-shaped cellular microstructures

The star-shaped auxetic structures with sharp reentrant corners are highly stressed in practice. In this article, a novel planar auxetic material is designed by introducing periodic cookie-shaped pattern to decrease the risk of structure failure. Then both auxetic and band gap properties are compreh...

Full description

Saved in:
Bibliographic Details
Published in:Mechanics of advanced materials and structures 2022-08, Vol.29 (23), p.3345-3358
Main Authors: Xiao, Si-Hang, Zhang, Chong, Qin, Qing-Hua, Wang, Hui
Format: Article
Language:English
Subjects:
Acoustic properties
Auxetic material
Auxetic materials
band gap
Cellular structure
Crystal structure
Energy gap
finite element analysis
Mechanical properties
Metamaterials
negative Poisson's ratio
phononic crystal
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The star-shaped auxetic structures with sharp reentrant corners are highly stressed in practice. In this article, a novel planar auxetic material is designed by introducing periodic cookie-shaped pattern to decrease the risk of structure failure. Then both auxetic and band gap properties are comprehensively investigated numerically. The results reveal that the stress level significantly decreases by an order of magnitude. Moreover, the designed structure can yield a large complete band gap in a much lower frequency region and has a good self-collimation effect. Finally, the parameter analysis allows one to tailor an auxetic phononic metamaterial with optimal acoustic and mechanical properties.
ISSN:1537-6494
1537-6532
DOI:10.1080/15376494.2021.1896057