Optimization of an acoustic black hole vibration absorber at the end of a cantilever beam

Cameron A. McCormick, Micah R. Shepherd

Research output: Contribution to journalArticle

Abstract

Structures whose thickness follow a power law profile exhibit the "acoustic black hole" (ABH) effect and can be used for effective vibration reduction. However, it is difficult to know a priori what constitutes the best design. A new block matrix formulation of the transfer matrix method is developed for use in the optimization of an ABH vibration absorber at the end of a cantilever beam. Results indicate that introduction of the ABH significantly alters the dynamics of the beam, which must be considered in determining the optimal design for a given vibration reduction problem.

Original languageEnglish (US)
Pages (from-to)EL593-EL597
JournalJournal of the Acoustical Society of America
Volume145
Issue number6
DOIs
StatePublished - Jun 1 2019

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cantilever beams
absorbers
vibration
optimization
acoustics
matrix methods
formulations
matrices
profiles
Acoustics
Cantilever

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

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Optimization of an acoustic black hole vibration absorber at the end of a cantilever beam. / McCormick, Cameron A.; Shepherd, Micah R.

In: Journal of the Acoustical Society of America, Vol. 145, No. 6, 01.06.2019, p. EL593-EL597.

Research output: Contribution to journalArticle

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