Nonlinear guided waves in plates: A numerical perspective

Vamshi Krishna Chillara, Cliff J. Lissenden

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

Harmonic generation from non-cumulative fundamental symmetric (S 0) and antisymmetric (A0) modes in plate is studied from a numerical standpoint. The contribution to harmonic generation from material nonlinearity is shown to be larger than that from geometric nonlinearity. Also, increasing the magnitude of the higher order elastic constants increases the amplitude of second harmonics. Second harmonic generation from non-phase-matched modes illustrates that group velocity matching is not a necessary condition for harmonic generation. Additionally, harmonic generation from primary mode is continuous and once generated, higher harmonics propagate independently. Lastly, the phenomenon of mode-interaction to generate sum and difference frequencies is demonstrated.

Original languageEnglish (US)
Pages (from-to)1553-1558
Number of pages6
JournalUltrasonics
Volume54
Issue number6
DOIs
StatePublished - Aug 2014

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All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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