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Article: Octet-truss cellular materials for improved mechanical properties and specific energy absorption

TitleOctet-truss cellular materials for improved mechanical properties and specific energy absorption
Authors
Keywords3D printing technique
Cellular materials
Deformation mechanism
In situ tests
Optimization design
Recoverability
Issue Date2019
Citation
Materials and Design, 2019, v. 173, article no. 107773 How to Cite?
AbstractOptimization method has been widely acknowledged as an effective approach to design engineering structures, and yet few studies adopt this method to design cellular materials. Here, we firstly adopted a Kriging assisted Multi-objective Genetic Algorithm to guideline the design of octet-truss (OCT) cellular materials with the maximum specific modulus. Subsequently, additional struts were artificially introduced into the optimized OCT to further mechanically reinforce performances. All the cellular materials were precisely fabricated using a Stereolithography 3D printing technique. By reasonably optimizing the sizes of OCT, the optimized OCT with a 1.112 mm diameter and 8.282 mm cell length was achieved, which displays a superior modulus-to-mass ratio. The highest modulus and strength of as-designed cellular materials achieved 34.12 MPa and 2.64 MPa, reinforced by ~3.11 and 4.81 times, respectively. Additionally, the absorbed energy efficiencies of them improved from 74.75% to 90.80%, which are significantly higher than other cellular materials. By in situ tests and fracture analyses, the high recoverability is attributed to the comprehensive effect of net-shaped architecture and elastic-plastic deformation.
Persistent Identifierhttp://hdl.handle.net/10722/326181
ISSN
2023 Impact Factor: 7.6
2023 SCImago Journal Rankings: 1.684
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSong, Jian-
dc.contributor.authorZhou, Wenzhao-
dc.contributor.authorWang, Yuejiao-
dc.contributor.authorFan, Rong-
dc.contributor.authorWang, Yinchu-
dc.contributor.authorChen, Junying-
dc.contributor.authorLu, Yang-
dc.contributor.authorLi, Lixiao-
dc.date.accessioned2023-03-09T09:58:40Z-
dc.date.available2023-03-09T09:58:40Z-
dc.date.issued2019-
dc.identifier.citationMaterials and Design, 2019, v. 173, article no. 107773-
dc.identifier.issn0264-1275-
dc.identifier.urihttp://hdl.handle.net/10722/326181-
dc.description.abstractOptimization method has been widely acknowledged as an effective approach to design engineering structures, and yet few studies adopt this method to design cellular materials. Here, we firstly adopted a Kriging assisted Multi-objective Genetic Algorithm to guideline the design of octet-truss (OCT) cellular materials with the maximum specific modulus. Subsequently, additional struts were artificially introduced into the optimized OCT to further mechanically reinforce performances. All the cellular materials were precisely fabricated using a Stereolithography 3D printing technique. By reasonably optimizing the sizes of OCT, the optimized OCT with a 1.112 mm diameter and 8.282 mm cell length was achieved, which displays a superior modulus-to-mass ratio. The highest modulus and strength of as-designed cellular materials achieved 34.12 MPa and 2.64 MPa, reinforced by ~3.11 and 4.81 times, respectively. Additionally, the absorbed energy efficiencies of them improved from 74.75% to 90.80%, which are significantly higher than other cellular materials. By in situ tests and fracture analyses, the high recoverability is attributed to the comprehensive effect of net-shaped architecture and elastic-plastic deformation.-
dc.languageeng-
dc.relation.ispartofMaterials and Design-
dc.subject3D printing technique-
dc.subjectCellular materials-
dc.subjectDeformation mechanism-
dc.subjectIn situ tests-
dc.subjectOptimization design-
dc.subjectRecoverability-
dc.titleOctet-truss cellular materials for improved mechanical properties and specific energy absorption-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.matdes.2019.107773-
dc.identifier.scopuseid_2-s2.0-85063894584-
dc.identifier.volume173-
dc.identifier.spagearticle no. 107773-
dc.identifier.epagearticle no. 107773-
dc.identifier.eissn1873-4197-
dc.identifier.isiWOS:000465533900007-

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