Second harmonic generation in composites: Theoretical and numerical analyses

Jinling Zhao, Vamshi K. Chillara, Baiyang Ren, Hwanjeong Cho, Jinhao Qiu, Cliff J. Lissenden

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Second harmonic generation in a transversely isotropic plate and a symmetric composite laminate is analyzed from a theoretical perspective. The strain energy function for a nonlinear elastic transversely isotropic material is expressed in terms of the five invariants of the Green-Lagrange strain tensor. Internal resonance conditions for the generation of cumulative second harmonics indicate that a cumulative second harmonic exists when the primary-secondary mode pair satisfies the phase matching and non-zero power flux criteria. In particular, for transversely isotropic plates, when the primary mode propagates along the material principal direction, only symmetric second harmonic Lamb-like wave modes can be cumulative. Also, when the primary wave propagates along other directions, only symmetric second harmonic modes can be generated. Additionally, for the case of symmetric composite laminates, only symmetric modes can be generated as cumulative second harmonics regardless of the propagation direction of the primary mode. To validate the above theoretical predictions, finite element simulations were conducted for mode pairs that are: (i) phase matched but have zero power flux, (ii) not phase matched but have non-zero power flux, and (iii) internally resonant i.e., satisfying both phase matching and non-zero power flux criterion. The results obtained from the simulations corroborate the theoretical findings for both transversely isotropic plates and symmetric composite laminates.

Original languageEnglish (US)
Article number064902
JournalJournal of Applied Physics
Volume119
Issue number6
DOIs
StatePublished - Feb 14 2016

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harmonic generations
composite materials
harmonics
laminates
phase matching
Lamb waves
simulation
tensors
propagation
predictions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Zhao, Jinling ; Chillara, Vamshi K. ; Ren, Baiyang ; Cho, Hwanjeong ; Qiu, Jinhao ; Lissenden, Cliff J. / Second harmonic generation in composites : Theoretical and numerical analyses. In: Journal of Applied Physics. 2016 ; Vol. 119, No. 6.
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Second harmonic generation in composites : Theoretical and numerical analyses. / Zhao, Jinling; Chillara, Vamshi K.; Ren, Baiyang; Cho, Hwanjeong; Qiu, Jinhao; Lissenden, Cliff J.

In: Journal of Applied Physics, Vol. 119, No. 6, 064902, 14.02.2016.

Research output: Contribution to journalArticle

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