Mechanical properties and energy absorption characteristics of additively manufactured lightweight novel re-entrant plate-based lattice structures

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dc.contributor.authorAl Hassanieh, Sultan
dc.contributor.authorAlhantoobi, Ahmed
dc.contributor.authorKhan, Kamran A.
dc.contributor.authorKhan, Muhammad A.
dc.date.accessioned2021-11-16T15:29:10Z
dc.date.available2021-11-16T15:29:10Z
dc.date.issued2021-11-10
dc.description.abstractIn this work, three novel re-entrant plate lattice structures (LSs) have been designed by transforming conventional truss-based lattices into hybrid-plate based lattices, namely, flat-plate modified auxetic (FPMA), vintile (FPV), and tesseract (FPT). Additive manufacturing based on stereolithography (SLA) technology was utilized to fabricate the tensile, compressive, and LS specimens with different relative densities (ρ). The base material’s mechanical properties obtained through mechanical testing were used in a finite element-based numerical homogenization analysis to study the elastic anisotropy of the LSs. Both the FPV and FPMA showed anisotropic behavior; however, the FPT showed cubic symmetry. The universal anisotropic index was found highest for FPV and lowest for FPMA, and it followed the power-law dependence of ρ. The quasi-static compressive response of the LSs was investigated. The Gibson–Ashby power law (≈ρn) analysis revealed that the FPMA’s Young’s modulus was the highest with a mixed bending–stretching behavior (≈ρ1.30), the FPV showed a bending-dominated behavior (≈ρ3.59), and the FPT showed a stretching-dominated behavior (≈ρ1.15). Excellent mechanical properties along with superior energy absorption capabilities were observed, with the FPT showing a specific energy absorption of 4.5 J/g, surpassing most reported lattices while having a far lower density.en_UK
dc.identifier.citationAl Hassanieh S, Alhantoobi A, Khan KA, Khan MA. (2021) Mechanical properties and energy absorption characteristics of additively manufactured lightweight novel re-entrant plate-based lattice structures. Polymers, Volume 13, Issue 22, November 2021, Article number 3882en_UK
dc.identifier.issn2073-4360
dc.identifier.urihttps://doi.org/10.3390/polym13223882
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/17271
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectadditive manufacturingen_UK
dc.subjectplate latticeen_UK
dc.subjectstereolithography (SLA)en_UK
dc.subjectcompression responseen_UK
dc.subjectresinen_UK
dc.subjectenergy absorptionen_UK
dc.titleMechanical properties and energy absorption characteristics of additively manufactured lightweight novel re-entrant plate-based lattice structuresen_UK
dc.typeArticleen_UK

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