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Insights into the mechanical properties of several triplyperiodic minimal surface lattice structures made by polymeradditive manufacturing

Maskery, Ian; Sturm, L.; Aremu, Adedeji; Panesar, Ajit; Williams, C.B.; Tuck, Christopher; Wildman, Ricky D.; Ashcroft, Ian; Hague, Richard J.M.

Authors

Ian Maskery

L. Sturm

Adedeji Aremu

Ajit Panesar

C.B. Williams

Christopher Tuck

Ricky D. Wildman

Ian Ashcroft

Richard J.M. Hague



Abstract

Three-dimensional lattices have applications across a range of fields including structural lightweighting, impact absorption and biomedicine. In this work, lattices based on triply periodic minimal surfaces were produced by polymer additive manufacturing and examined with a combination of experimental and computational methods. This investigation elucidates their deformation mechanisms and provides numerical parameters crucial in establishing relationships between their geometries and mechanical performance. Three types of lattice were examined, with one, known as the primitive lattice, being found to have a relative elastic modulus over twice as large as those of the other two. The deformation process of the primitive lattice was also considerably different from those of the other two, exhibiting strut stretching and buckling, while the gyroid and diamond lattices deformed in a bending dominated manner. Finite element predictions of the stress distributions in the lattices under compressive loading agreed with experimental observations. These results can be used to create better informed lattice designs for a range of mechanical and biomedical applications.

Journal Article Type Article
Publication Date Dec 12, 2018
Journal Polymer
Print ISSN 0032-3861
Electronic ISSN 0032-3861
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 152
Pages 62-71
APA6 Citation Maskery, I., Sturm, L., Aremu, A., Panesar, A., Williams, C., Tuck, C., …Hague, R. J. (2018). Insights into the mechanical properties of several triplyperiodic minimal surface lattice structures made by polymeradditive manufacturing. Polymer, 152, 62-71. doi:10.1016/j.polymer.2017.11.049
DOI https://doi.org/10.1016/j.polymer.2017.11.049
Keywords selective laser sintering; additive manufacturing; cellular solid; lattice; triply periodic minimal surface
Publisher URL https://www.sciencedirect.com/science/article/pii/S0032386117311175
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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