Mechanical behaviour of 3D-printed metamaterials with tunable stifness
Keywords:metamaterials, additive manufacturing, tunable compressive stiffness
The concept of mechanical metamaterials has received special attention during the last years due to the advances in additive manufacturing techniques that allows fabrication of structures with complex architectures. The special design of metamaterials micro architecture offers the possibilities to obtain unprecedented mechanical properties that could be exploited to create advanced materials with novel functionalities. This paper presents the design, fabrication and testing of cellular metamaterials obtained by fused deposition molding, an affordable additive technology. Cellular structures with comparative cell dimensions but different geometries have been printed out and subjected to uniaxial compression test. The understanding of mechanical behavior of proposed structures leads to the possibility to create metamaterials with tunable compressive or bending stiffness. For the designed cellular metamaterials the results of experimental investigations are compared with those obtained by finite element analysis.
POPE, S., H. Laalej, A multi-layer active elastic metamaterial with tuneable and simultaneously negative mass and stiffness, Smart Materials and Structures, 23, 7, 075020, 2014.
BERTOLDI, K. et al., Flexible mechanical metamaterials, Nature Reviews Materials, 2, p. 17066, 2017.
CUMMER, S.A., J. CHRISTENSEN, and A. ALÙ, Controlling sound with acoustic metamaterials, Nature Reviews Materials, 1, 3, article number 16001, 2016.
HAN, T. et al., Manipulating Steady Heat Conduction by Sensu-shaped Thermal Metamaterials. Scientific Reports, 5, 10242, 2015.
ZADPOOR, A.A., Mechanical meta-materials, Materials Horizons, 3, 5, pp. 371-381, 2016.
ION, A. et al., Metamaterial mechanisms, Proceedings of the 29th Annual Symposium on User Interface Software and Technology, Tokyo, Japan, October 16-19, 2016, pp. 529–539.
ION, A. et al., Understanding Metamaterial Mechanisms, Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems (ACM), 2019, p. 647.
REN, X. et al., Auxetic metamaterials and structures: A review, Smart Materials and Structures, 27, 2, 023001, 2018.
ION, A. et al. Digital mechanical metamaterials, Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems (ACM), 2017, pp. 977-988.
ION, A. et al. Metamaterial Textures, Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems, (ACM), 2018.
ION, A. et al. A Demonstration of Metamaterial Textures, Extended Abstracts of the 2018 CHI Conference on Human Factors in Computing Systems, (ACM), 2018, p. 336.
HERZBERGER, J. et al., Polymer Design for 3D Printing Elastomers: Recent Advances in Structure, Properties, and Printing, Progress in Polymer Science, 101144, 2019.
https://jfrohnhofen.github.io/metamaterial-mechanisms/ [cited 10.09.2019].
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