Mechanical vibration bandgaps in surface-based lattices

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

Abstract

In this paper, the phonon dispersion curves of several surface-based lattices are examined, and their energy transmission spectra, along with the corresponding bandgaps are identified. We demonstrate that these bandgaps may be controlled, or tuned, through the choice of cell type, cell size and volume fraction. Our results include two findings of high relevance to the designers of lattice structures: (i) network and matrix phase gyroid lattice structures develop bandgaps below 15 kHz while network diamond and matrix diamond lattices do not, and (ii) the bandwidth of a bandgap in the network phase gyroid lattice can be tuned by adjusting its volume fraction and cell size.

Citation

Elmadih, W., Syam, W. P., Maskery, I., Chronopoulos, D., & Leach, R. (2019). Mechanical vibration bandgaps in surface-based lattices. Additive Manufacturing, 25, 421-429. https://doi.org/10.1016/j.addma.2018.11.011

• Journal Article Type: Article
• Acceptance Date: Nov 9, 2018
• Online Publication Date: Nov 13, 2018
• Publication Date: Jan 30, 2019
• Deposit Date: Nov 27, 2018
• Publicly Available Date: Nov 14, 2019
• Journal: Additive Manufacturing
• Print ISSN: 2214-7810
• Electronic ISSN: 2214-8604
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 25
• Pages: 421-429
• DOI: https://doi.org/10.1016/j.addma.2018.11.011
• Keywords: lattice structures; phononic materials; mechanical bandgaps; design for additive manufacturing
• Public URL: https://nottingham-repository.worktribe.com/output/1311284
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S2214860418302781