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Multidimensional Phononic Bandgaps in Three-Dimensional Lattices for Additive Manufacturing

Elmadih, Waiel; Syam, Wahyudin P.; Maskery, Ian; Chronopoulos, Dimitrios; Leach, Richard

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Authors

Waiel Elmadih

Wahyudin P. Syam

Dimitrios Chronopoulos



Abstract

We report on numerical modelling of three-dimensional lattice structures designed to provide phononic bandgaps. The examined lattice structures rely on two distinct mechanisms for bandgap formation: the destructive interference of elastic waves and internal resonance. Further to the effect of lattice type on the development of phononic bandgaps, we also present the effect of volume fraction, which enables the designer to control the frequency range over which the bandgaps exist. The bandgaps were identified from dispersion curves obtained using a finite element wave propagation modelling technique that provides high computational efficiency and high wave modelling accuracy. We show that lattice structures employing internal resonance can provide transmissibility reduction of longitudinal waves of up to −103 dB. Paired with the manufacturing freedom and material choice of additive manufacturing, the examined lattice structures can be tailored for use in wide-ranging applications including machine design, isolation and support platforms, metrology frames, aerospace and automobile applications, and biomedical devices.

Citation

Elmadih, W., Syam, W. P., Maskery, I., Chronopoulos, D., & Leach, R. (2019). Multidimensional Phononic Bandgaps in Three-Dimensional Lattices for Additive Manufacturing. Materials, 12(11), Article 1878. https://doi.org/10.3390/ma12111878

Journal Article Type Article
Acceptance Date Jun 3, 2019
Online Publication Date Jun 11, 2019
Publication Date 2019-06
Deposit Date Jun 18, 2019
Publicly Available Date Mar 29, 2024
Journal Materials
Electronic ISSN 1996-1944
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 12
Issue 11
Article Number 1878
DOI https://doi.org/10.3390/ma12111878
Keywords General Materials Science
Public URL https://nottingham-repository.worktribe.com/output/2202676
Publisher URL https://www.mdpi.com/1996-1944/12/11/1878

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