The focus of this paper is on elastic metamaterials characterised by the presence of wide sub-wavelength band gap. In most cases, such mechanical property is strictly connected to the periodic repetition of the unit cell. Nonetheless, the strict periodicity requirement could represent a drawback. In this paper, we present a design strategy for aperiodic elastic metamaterials in order to achieve the same performances as for the periodic counterparts. This is done by exploiting the concept of separation of modes for different building blocks, arranged in aperiodic fashion. A theoretical explanation is provided, as well as numerical simulations; the concept is validated by means of a set of experimental tests on prototypes that are realized via additive manufacturing.

A design strategy to match the band gap of periodic and aperiodic metamaterials / D'Alessandro, L.; Krushynska, A. O.; Ardito, R.; Pugno, N. M.; Corigliano, A.. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - 10:1(2020), pp. 16403.1-16403.5. [10.1038/s41598-020-73299-3]

A design strategy to match the band gap of periodic and aperiodic metamaterials

Pugno N. M.;
2020

Abstract

The focus of this paper is on elastic metamaterials characterised by the presence of wide sub-wavelength band gap. In most cases, such mechanical property is strictly connected to the periodic repetition of the unit cell. Nonetheless, the strict periodicity requirement could represent a drawback. In this paper, we present a design strategy for aperiodic elastic metamaterials in order to achieve the same performances as for the periodic counterparts. This is done by exploiting the concept of separation of modes for different building blocks, arranged in aperiodic fashion. A theoretical explanation is provided, as well as numerical simulations; the concept is validated by means of a set of experimental tests on prototypes that are realized via additive manufacturing.
1
D'Alessandro, L.; Krushynska, A. O.; Ardito, R.; Pugno, N. M.; Corigliano, A.
A design strategy to match the band gap of periodic and aperiodic metamaterials / D'Alessandro, L.; Krushynska, A. O.; Ardito, R.; Pugno, N. M.; Corigliano, A.. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - 10:1(2020), pp. 16403.1-16403.5. [10.1038/s41598-020-73299-3]
File in questo prodotto:
File Dimensione Formato  
479-NAT20-A-design-strategy-aperiodic-metamaterials.pdf

accesso aperto

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Creative commons
Dimensione 2.94 MB
Formato Adobe PDF
2.94 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/287195
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 20
  • ???jsp.display-item.citation.isi??? 18
social impact