Phys. Rev. E 78, 046603 (2008) [4 pages]Explosive dynamics and localization of wave triads in a coupled magnetoelastic systemReceived 7 July 2008; published 2 October 2008 The dynamics of three-wave parametric coupling is considered on an example of nonequilibrium magnetostrictive medium under electromagnetic pumping. Subthreshold and supercritical mode of three-wave excitation are described analytically and simulated numerically for a triad of magnetoelastic waves. Theoretical analysis of the supercritical mode shows that space-time development of three-wave excitation in such a nonequilibrium system has the character of explosive instability and localization of “positive energy” waves. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.78.046603
DOI:
10.1103/PhysRevE.78.046603
PACS:
43.25.+y, 05.45.−a, 63.20.kg
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