Exploiting pattern transformation to tune phononic band gaps in a two-dimensional granular crystal

F. Göncü, Stefan Luding, Katia Bertoldi

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The band structure of a two-dimensional granular crystal composed of silicone rubber and polytetrafluoroethylene (PTFE) cylinders is investigated numerically. This system was previously shown to undergo a pattern transformation with uniaxial compression by Göncü et al. [Soft Matter 7, 2321 (2011)]. The dispersion relations of the crystal are computed at different levels of deformation to demonstrate the tunability of the band structure, which is strongly affected by the pattern transformation that induces new band gaps. Replacement of PTFE particles with rubber ones reveals that the change of the band structure is essentially governed by pattern transformation rather than particles¿ mechanical properties.
Original languageEnglish
Pages (from-to)EL475-EL480
JournalJournal of the Acoustical Society of America
Volume131
Issue number6
DOIs
Publication statusPublished - 17 May 2012

Keywords

  • METIS-288489
  • IR-81868

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