Mechanical Metamaterials with Discontinuous and Tension/Compression‐Dependent Positive/Negative Poisson's Ratio
Ordinary materials have positive Poisson's ratios (PRs), and the currently known mechanical metamaterials possess negative PRs both under tension and compression. Herein, two types of novel cellular structure units with tension/compression‐dependent positive/negative PRs are demonstrated. For t...
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| Veröffentlicht in: | Advanced engineering materials 2022-03, Vol.24 (3), p.n/a |
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| creator | Yang, Nan Deng, Yong Zhao, Shengjie Song, Yifan Huang, Jinlun Wu, Nan |
| description | Ordinary materials have positive Poisson's ratios (PRs), and the currently known mechanical metamaterials possess negative PRs both under tension and compression. Herein, two types of novel cellular structure units with tension/compression‐dependent positive/negative PRs are demonstrated. For type I structure, the unit exhibits a positive PR during tension and a negative PR during compression, while for type II structure, the unit shows a negative PR during tension and a positive PR during compression. The deformation behaviors of the new metamaterials are first predicted by a simple analytical model and finite‐element method calculations, and the predicted results are then confirmed experimentally. Numerical and experimental studies show that for the plane angle α |
| doi_str_mv | 10.1002/adem.202100787 |
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Herein, two types of novel cellular structure units with tension/compression‐dependent positive/negative PRs are proposed. For type I structure, the unit exhibits a positive PR during tension and a negative PR during compression, while for type II structure, the unit shows a negative PR during tension and a positive PR during compression.</description><identifier>ISSN: 1438-1656</identifier><identifier>EISSN: 1527-2648</identifier><identifier>DOI: 10.1002/adem.202100787</identifier><language>eng</language><subject>additive manufacturing ; auxetic materials ; deformations ; discontinuous Poisson's ratios ; mechanical metamaterials</subject><ispartof>Advanced engineering materials, 2022-03, Vol.24 (3), p.n/a</ispartof><rights>2021 Wiley‐VCH GmbH</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2897-b025bffd97d02846c11855343509e19061be78dc3f1b1412d08ece1fcb72d9b43</citedby><cites>FETCH-LOGICAL-c2897-b025bffd97d02846c11855343509e19061be78dc3f1b1412d08ece1fcb72d9b43</cites><orcidid>0000-0002-6338-0763</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fadem.202100787$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fadem.202100787$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Yang, Nan</creatorcontrib><creatorcontrib>Deng, Yong</creatorcontrib><creatorcontrib>Zhao, Shengjie</creatorcontrib><creatorcontrib>Song, Yifan</creatorcontrib><creatorcontrib>Huang, Jinlun</creatorcontrib><creatorcontrib>Wu, Nan</creatorcontrib><title>Mechanical Metamaterials with Discontinuous and Tension/Compression‐Dependent Positive/Negative Poisson's Ratio</title><title>Advanced engineering materials</title><description>Ordinary materials have positive Poisson's ratios (PRs), and the currently known mechanical metamaterials possess negative PRs both under tension and compression. Herein, two types of novel cellular structure units with tension/compression‐dependent positive/negative PRs are demonstrated. For type I structure, the unit exhibits a positive PR during tension and a negative PR during compression, while for type II structure, the unit shows a negative PR during tension and a positive PR during compression. The deformation behaviors of the new metamaterials are first predicted by a simple analytical model and finite‐element method calculations, and the predicted results are then confirmed experimentally. Numerical and experimental studies show that for the plane angle α<90°, the unit of the new metamaterial switches its PR under compression and exhibits a discontinuous change in the PR. The deformation law does not depend on either the Young's modulus or the hardness of the material. The geometrically determined deformation behaviors of the proposed metamaterials are observed in 2D and 3D cellular structures and are proven to be robust through numerical and experimental studies. The proposed mechanical metamaterials can be applied as new deformation‐protected materials in energy‐absorbing devices, soft robotics, and tissue engineering scaffolds and as thermal deformation materials.
Herein, two types of novel cellular structure units with tension/compression‐dependent positive/negative PRs are proposed. For type I structure, the unit exhibits a positive PR during tension and a negative PR during compression, while for type II structure, the unit shows a negative PR during tension and a positive PR during compression.</description><subject>additive manufacturing</subject><subject>auxetic materials</subject><subject>deformations</subject><subject>discontinuous Poisson's ratios</subject><subject>mechanical metamaterials</subject><issn>1438-1656</issn><issn>1527-2648</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNqFkL1OwzAUhS0EEqWwMntjSuPr_Dlj1ZYfqQWEyhw59g01auwSp1TdeASekSchURGMTPfco_Od4RByCWwEjPFQaqxHnPHuyUR2RAaQ8CzgaSyOOx1HIoA0SU_JmfevjAEwiAbkbYFqJa1Rck0X2MpattgYufZ0Z9oVnRqvnG2N3bqtp9JqukTrjbPhxNWbBn2vvz4-p7hBq9G29NF505p3DO_xRfaic4z3zl55-tQZ7pycVF0_XvzcIXm-ni0nt8H84eZuMp4Hios8C0rGk7KqdJ5pxkWcKgCRJFEcJSxHyFkKJWZCq6iCEmLgmglUCJUqM67zMo6GZHToVY3zvsGq2DSmls2-AFb0gxX9YMXvYB2QH4CdWeP-n3Qxns4Wf-w3arty9A</recordid><startdate>202203</startdate><enddate>202203</enddate><creator>Yang, Nan</creator><creator>Deng, Yong</creator><creator>Zhao, Shengjie</creator><creator>Song, Yifan</creator><creator>Huang, Jinlun</creator><creator>Wu, Nan</creator><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-6338-0763</orcidid></search><sort><creationdate>202203</creationdate><title>Mechanical Metamaterials with Discontinuous and Tension/Compression‐Dependent Positive/Negative Poisson's Ratio</title><author>Yang, Nan ; Deng, Yong ; Zhao, Shengjie ; Song, Yifan ; Huang, Jinlun ; Wu, Nan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2897-b025bffd97d02846c11855343509e19061be78dc3f1b1412d08ece1fcb72d9b43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>additive manufacturing</topic><topic>auxetic materials</topic><topic>deformations</topic><topic>discontinuous Poisson's ratios</topic><topic>mechanical metamaterials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Nan</creatorcontrib><creatorcontrib>Deng, Yong</creatorcontrib><creatorcontrib>Zhao, Shengjie</creatorcontrib><creatorcontrib>Song, Yifan</creatorcontrib><creatorcontrib>Huang, Jinlun</creatorcontrib><creatorcontrib>Wu, Nan</creatorcontrib><collection>CrossRef</collection><jtitle>Advanced engineering materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, Nan</au><au>Deng, Yong</au><au>Zhao, Shengjie</au><au>Song, Yifan</au><au>Huang, Jinlun</au><au>Wu, Nan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mechanical Metamaterials with Discontinuous and Tension/Compression‐Dependent Positive/Negative Poisson's Ratio</atitle><jtitle>Advanced engineering materials</jtitle><date>2022-03</date><risdate>2022</risdate><volume>24</volume><issue>3</issue><epage>n/a</epage><issn>1438-1656</issn><eissn>1527-2648</eissn><abstract>Ordinary materials have positive Poisson's ratios (PRs), and the currently known mechanical metamaterials possess negative PRs both under tension and compression. Herein, two types of novel cellular structure units with tension/compression‐dependent positive/negative PRs are demonstrated. For type I structure, the unit exhibits a positive PR during tension and a negative PR during compression, while for type II structure, the unit shows a negative PR during tension and a positive PR during compression. The deformation behaviors of the new metamaterials are first predicted by a simple analytical model and finite‐element method calculations, and the predicted results are then confirmed experimentally. Numerical and experimental studies show that for the plane angle α<90°, the unit of the new metamaterial switches its PR under compression and exhibits a discontinuous change in the PR. The deformation law does not depend on either the Young's modulus or the hardness of the material. The geometrically determined deformation behaviors of the proposed metamaterials are observed in 2D and 3D cellular structures and are proven to be robust through numerical and experimental studies. The proposed mechanical metamaterials can be applied as new deformation‐protected materials in energy‐absorbing devices, soft robotics, and tissue engineering scaffolds and as thermal deformation materials.
Herein, two types of novel cellular structure units with tension/compression‐dependent positive/negative PRs are proposed. For type I structure, the unit exhibits a positive PR during tension and a negative PR during compression, while for type II structure, the unit shows a negative PR during tension and a positive PR during compression.</abstract><doi>10.1002/adem.202100787</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-6338-0763</orcidid></addata></record> |
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| subjects | additive manufacturing auxetic materials deformations discontinuous Poisson's ratios mechanical metamaterials |
| title | Mechanical Metamaterials with Discontinuous and Tension/Compression‐Dependent Positive/Negative Poisson's Ratio |
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