Insights into the mechanical properties of several triply periodic minimal surface lattice structures made by polymer additive manufacturing

By I. Maskery, L. Sturm, A. Aremu, A. Panesar, Christopher B. Williams, Christopher John Tuck, Ricky Wildman, Ian Ashcroft, Richard J. M. Hague. Polymer, 2017

624 citations recorded by the source corpus.

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.

Subfields: Automotive Engineering, Mechanical Engineering, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/4eda5a36222c8a0b7542cae2449a91a7bd4523ff

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Citations in the corpus

Design and Optimization of Lattice Structures: A Review (2020, background): “Maskery et al. [168] pointed out that lattice structure designed by TPMS has a good combination of speciﬁc sti ﬀ ness and axisymmetric sti ﬀ ness, high surface volume ratio, and pore connectivity.”
Triply periodic minimal surface (TPMS) porous structures: from multi-scale design, precise additive manufacturing to multidisciplinary applications (2022, methodology): “Maskery discussed the compressive deformation behaviors of G, D, and P [36].”
Acoustic absorptions of multifunctional polymeric cellular structures based on triply periodic minimal surfaces fabricated by stereolithography (2020, background): “…Singapore Center for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore (Al-ketan, Rowshan, and Al-Rub 2018; Abueidda et al. 2017; Zhang et al. 2018; Maskery et al. 2018; Elmadih et al. 2019).”
Effective design and simulation of surface-based lattice structures featuring volume fraction and cell type grading (2018, methodology): “We have described the general methodology for the production of hexahedral finite element (FE) meshes based on surface equations in a previous work [18].”