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Mechanical design and multifunctional applications of chiral mechanical metamaterials: A review

Materials & design, 2019-10, Vol.180, p.107950, Article 107950 [Peer Reviewed Journal]

2019 ;ISSN: 0264-1275 ;EISSN: 1873-4197 ;DOI: 10.1016/j.matdes.2019.107950

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  • Title:
    Mechanical design and multifunctional applications of chiral mechanical metamaterials: A review
  • Author: Wu, Wenwang ; Hu, Wenxia ; Qian, Guian ; Liao, Haitao ; Xu, Xiaoying ; Berto, Filippo
  • Subjects: Auxetics ; Chiral ; Mechanical metamaterials ; Multifunctional
  • Is Part Of: Materials & design, 2019-10, Vol.180, p.107950, Article 107950
  • Description: Rational design of artificial micro-structured metamaterials with advanced mechanical and physical properties that are not accessible in nature materials is challenging and important. In our paper, mechanical designs of 2D and 3D chiral mechanical metamaterials are reviewed, and their mechanical behaviors and deformation mechanisms can be investigated through equilibrium principle, strain energy analysis, micropolar elasticity and homogenization theories. Afterwards, multifunctional properties of chiral mechanical metamaterials are elaborated, such as: vibration attenuation, impact energy absorption and negative coefficient of thermal expansion (CTE). Finally, several successful industrial applications of chiral mechanical metamaterials are demonstrated, such as: morphing airfoil smart deployable antenna and reconfigurable structures, auxetic stent, chiral flexible electronics and phase transforming metastructures, etc. Finally, perspectives and challenges on chiral mechanical metamaterials are discussed. Rational design of artificial micro-structured metamaterials with advanced mechanical and physical properties that are not accessible in nature materials is challenging and important. In the past several years, making use of the node rotation and ligament bending deformation features of chiral elements, various types of 2D and 3D chiral mechanical metamaterials are designed and proposed for industrial application. In our paper, mechanical designs of 2D and 3D chiral mechanical metamaterials are reviewed, and their mechanical behaviors and deformation mechanisms can be investigated through force and momentum equilibrium principle, strain energy analysis, micropolar elasticity and homogenization theories. Afterwards, multifunctional properties of chiral mechanical metamaterials are elaborated, such as: vibration attenuation and bandgap features, impact energy absorption and negative coefficient of thermal expansion (CTE). Finally, several successful industrial applications of chiral mechanical metamaterials are demonstrated, such as: morphing airfoil with chiral core configuration, shape memorial smart deployable antenna and reconfigurable structures, auxetic stent for biomedical application, chiral flexible electronics and phase transforming metastructures with shape switching abilities, etc. [Display omitted] •Design of chiral mechanical metamaterials are reviewed, theoretical models are elaborated for exploring the deformation mechanisms.•Multifunctional mechanical benefits and limitations of chiral mechanical metamaterials are reviewed and discussed.•Industrial applications of chiral mechanical metamaterials are reviewed, perspectives and challenges are discussed.
  • Publisher: Elsevier Ltd
  • Language: English
  • Identifier: ISSN: 0264-1275
    EISSN: 1873-4197
    DOI: 10.1016/j.matdes.2019.107950
  • Source: DOAJ Directory of Open Access Journals
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