Wave beams in crystals with dislocations and quadratic nonlinearity

Nonlinear elastic waves in dislocated crystals are considered in terms of equations with constant coefficients, which involve a quadratic nonlinearity. A nonlinear modulation equation with a cubic nonlinearity is obtained for the first harmonic amplitude, a dispersion equation is derived, and the ab...

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Veröffentlicht in:	Technical physics letters 2009-04, Vol.35 (4), p.337-339
1. Verfasser:	Shekoyan, A. V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Classical and Continuum Physics Physics Physics and Astronomy
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Nonlinear elastic waves in dislocated crystals are considered in terms of equations with constant coefficients, which involve a quadratic nonlinearity. A nonlinear modulation equation with a cubic nonlinearity is obtained for the first harmonic amplitude, a dispersion equation is derived, and the absorption coefficient is determined. The stability and focusing (self-focusing) of a wave beam are studied.
ISSN:	1063-7850 1090-6533
DOI:	10.1134/S1063785009040142