Large strain zero Poisson’s ratio spring cell metamaterial with critical defect analysis and variable stiffness distributions

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dc.contributor.authorQin, Qing
dc.contributor.authorDayyani, Iman
dc.date.accessioned2023-05-17T16:17:33Z
dc.date.available2023-05-17T16:17:33Z
dc.date.issued2013-05-12
dc.description.abstractThis paper presents novel metamaterial skins formed by 3D Spring Cells exhibiting zero Poisson’s ratio in two directions with no stress concentration on joints. Precise CAD models are generated to perform numerical and experiment analysis. High-fidelity Finite element models are developed to assess the homogenisation study of zero Poisson’s ratio. Moreover, the analytical method is also used to present for normalised Young’s modulus. Parametric study for the effect of parameter on normalised Young’s modulus and Poisson’s ratio is demonstrated based on analytical method. Pure shear analysis is demonstrated to show the off-axis loading behaviour. Structural defect analysis is investigated with regarding to its deformation mechanism under tensile strain. Furthermore, variable stiffness distribution of Spring Cell metamaterials is demonstrated while maintaining large strain zero Poisson’s ratio. The frequency and buckling analysis of metamaterials formed by spring cells are investigated and compared with equivalent shell. Moreover, their mechanical behaviours including buckling and frequency are investigated. Experiment analysis is performed to validate the force–displacement, Poisson’s ratio and deformation mechanisms discussed in numerical simulations. Finally, construction material analysis is taking to investigate the relations between metamaterial Poisson’s ratio and Young’s modulus and variety types of construction material.en_UK
dc.identifier.citationQin Q, Dayyani I. (2023) Large strain zero Poisson’s ratio spring cell metamaterial with critical defect analysis and variable stiffness distributions. Composite Structures, Volume 318, August 2023, Article number 117102en_UK
dc.identifier.issn0263-8223
dc.identifier.urihttps://doi.org/10.1016/j.compstruct.2023.117102
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19666
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectmechanical metamaterialen_UK
dc.subjectlarge strain zero Poisson’s ratioen_UK
dc.subjectspring structureen_UK
dc.subject3D printingen_UK
dc.subjecttuneable stiffnessen_UK
dc.titleLarge strain zero Poisson’s ratio spring cell metamaterial with critical defect analysis and variable stiffness distributionsen_UK
dc.typeArticleen_UK

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