Sine-based lattice plates: additive manufacturing and their mechanical properties when loaded out of plane
ISSN: 1355-2546
Article publication date: 29 May 2023
Issue publication date: 18 October 2023
Abstract
Purpose
Demanding applications could benefit from the mathematical parametrization of lattice structures as this could lead not only to the characterization of structure–property relation but also facilitates the tailoring of the effective mechanical properties. This paper aims to characterize the mechanical performance of sine-based lattices. The characterization includes the results of in-plane Poisson’s ratio plates models, and the stiffness of additively manufactured lattice plates when loaded in the out-of-plane direction, with the objective of obtaining a relation with their geometrical parameters.
Design/methodology/approach
The geometrical parameter–Poisson’s ratio relationship was characterized via finite element (FE) simulations. The stiffness was also measured on additively manufactured polylactic acid lattice plates and contrasted with FE computations.
Findings
The characterization of auxetic lattice plates performed using in-plane and out-of-plane loading leads to key properties when deciding the geometry specific for applications: relative density, auxetic behavior and stiffness. Approximately 26% reduction of stiffness was observed between the square lattice and sine-based lattices of the same volume fraction.
Originality/value
Auxetic metamaterials are potential candidates for applications in biomedical engineering, smart sensors, sports and soft robotics. This paper aims to contribute to the existing gap in the study of auxetic metamaterials subjected to complex loading conditions, other than simple tension and compression, required for the mentioned applications.
Keywords
Acknowledgements
Authors acknowledge Consejo Nacional de Ciencia y Tecnologia (CONACyT) for the financial support to D.L.R-G. for her MSc studies (CVU: 883618).
Authors declare no conflicts of interest.
Citation
Ramírez-Gutiérrez, D.L., Cuan-Urquizo, E. and Fuentes-Aguilar, R.Q. (2023), "Sine-based lattice plates: additive manufacturing and their mechanical properties when loaded out of plane", Rapid Prototyping Journal, Vol. 29 No. 9, pp. 1773-1787. https://doi.org/10.1108/RPJ-01-2023-0010
Publisher
:Emerald Publishing Limited
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