The Nonlinear Excitation of Hypersound in Bilayer Ferrite Structure
V. S.
Vlasov 1, V.
G. Shavrov 2,
V. I.
Shcheglov 2
1Syktyvkar
State University, Syktyvkar, Russia
2Kotel’nikov
Institute of Radio Engineering and Electronics, Moscow, Russia
Received
February 19, 2013
Abstract. The nonlinear task about hypersound excitation in normal magnetized structure is investigated. This structure consist of two infinite
magnetic dielectric plates put together. The magnetic and magnetoelastic
parameters of plates are different but elastic parameters are the same. The
motion equations and boundary conditions for magnetization and elastic
displacement components are found in the case of arbitrary magnetization vector
angle. The numeric calculation of equation system is made by Runge-Cutta
method. It is shown that in nonlinear regime because of magnetic resonances
connection the excited hypersound amplitude increases to a great extent and may
to exceed the linear regime amplitude on two orders.
Key words: hypersound, nonlinear
vibrations, magnetoelasticity.