Hierarchical anisogrid cylindrical shells: Design, additive manufacture and imperfection analyses.
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| Title: | Hierarchical anisogrid cylindrical shells: Design, additive manufacture and imperfection analyses. |
|---|---|
| Authors: | Lin, Yiling1 (AUTHOR), Fan, Hualin1,2,3 (AUTHOR) fhl15@nuaa.edu.cn |
| Source: | International Journal of Mechanical Sciences. May2025, Vol. 293, pN.PAG-N.PAG. 1p. |
| Subjects: | Cylindrical shells, Failure analysis, Failure mode & effects analysis, Manufacturing defects, Finite element method, Mechanical buckling |
| Abstract: | • Hierarchical design with fractal skin improves buckling resistance and load capacity. • Fractal skin changes failure mode to plastic, increasing load capacity by 53.12 %. • Defects impact fractal skin more severely than traditional designs. • Size-corrected FEA model aligns well with experimental results. • Theoretical model predicts deformation, enhancing design reliability. Anisogrid cylindrical structures (ACS) are widely used in aerospace applications as load-bearing components, but their susceptibility to local buckling and the need for thicker skins in larger structures pose challenges for lightweight design. To address these limitations, this study proposes a hierarchical anisogrid cylindrical shell (HACS) with fractal skin, fabricated using laser powder bed fusion (L-PBF). The mechanical properties and failure modes of HACSs with varying volume fractions were compared to those of traditional anisogrid cylindrical shells (TACSs) through experimental, finite element modeling (FEM), and theoretical analyses. The results reveal that the hierarchical design significantly improves buckling resistance and load-bearing capacity, with the fractal skin enabling a transition from elastic to plastic failure modes at low volume fractions and increasing load capacity by 53.12 %. Manufacturing defects were found to reduce mechanical performance, particularly in the fractal skin, while a size-corrected FEM demonstrated strong agreement with experimental data. A theoretical failure analysis model was also developed to predict structural deformation, offering a reliable tool for evaluating lattice cylinder performance. This study aims to provide new insights into the means of enhancing the bearing capacity of lattice cylinders through the application of hierarchical design and additive manufacture. [Display omitted] [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Mechanical Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 184473983 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Hierarchical anisogrid cylindrical shells: Design, additive manufacture and imperfection analyses. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lin%2C+Yiling%22">Lin, Yiling</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fan%2C+Hualin%22">Fan, Hualin</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> fhl15@nuaa.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Mechanical+Sciences%22">International Journal of Mechanical Sciences</searchLink>. May2025, Vol. 293, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Cylindrical+shells%22">Cylindrical shells</searchLink><br /><searchLink fieldCode="DE" term="%22Failure+analysis%22">Failure analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Failure+mode+%26+effects+analysis%22">Failure mode & effects analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Manufacturing+defects%22">Manufacturing defects</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+buckling%22">Mechanical buckling</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: • Hierarchical design with fractal skin improves buckling resistance and load capacity. • Fractal skin changes failure mode to plastic, increasing load capacity by 53.12 %. • Defects impact fractal skin more severely than traditional designs. • Size-corrected FEA model aligns well with experimental results. • Theoretical model predicts deformation, enhancing design reliability. Anisogrid cylindrical structures (ACS) are widely used in aerospace applications as load-bearing components, but their susceptibility to local buckling and the need for thicker skins in larger structures pose challenges for lightweight design. To address these limitations, this study proposes a hierarchical anisogrid cylindrical shell (HACS) with fractal skin, fabricated using laser powder bed fusion (L-PBF). The mechanical properties and failure modes of HACSs with varying volume fractions were compared to those of traditional anisogrid cylindrical shells (TACSs) through experimental, finite element modeling (FEM), and theoretical analyses. The results reveal that the hierarchical design significantly improves buckling resistance and load-bearing capacity, with the fractal skin enabling a transition from elastic to plastic failure modes at low volume fractions and increasing load capacity by 53.12 %. Manufacturing defects were found to reduce mechanical performance, particularly in the fractal skin, while a size-corrected FEM demonstrated strong agreement with experimental data. A theoretical failure analysis model was also developed to predict structural deformation, offering a reliable tool for evaluating lattice cylinder performance. This study aims to provide new insights into the means of enhancing the bearing capacity of lattice cylinders through the application of hierarchical design and additive manufacture. [Display omitted] [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Mechanical Sciences is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ijmecsci.2025.110174 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Cylindrical shells Type: general – SubjectFull: Failure analysis Type: general – SubjectFull: Failure mode & effects analysis Type: general – SubjectFull: Manufacturing defects Type: general – SubjectFull: Finite element method Type: general – SubjectFull: Mechanical buckling Type: general Titles: – TitleFull: Hierarchical anisogrid cylindrical shells: Design, additive manufacture and imperfection analyses. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lin, Yiling – PersonEntity: Name: NameFull: Fan, Hualin IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00207403 Numbering: – Type: volume Value: 293 Titles: – TitleFull: International Journal of Mechanical Sciences Type: main |
| ResultId | 1 |
