264 - Excitation of nonlinear normal shearing waves in crystal half-layer
Kurennaya K.
Abstract
Problem of excitation of nonlinear normal SH-waves near the edge of anisotropic half-layer is considered. Since the linear wave field includes finite quantity of waves with real wave numbers and countable set of edging standing waves with spatial attenuation, the method of series by basic homogeneous solutions has been used. Solution, which describe the second harmonics for total field of normal waves, is presented as a sum of pure second harmonics (particular solutions in a form of monochromatic and combination harmonics of SH-waves with double frequencies and different combinations of wave numbers), and linear normal P-SV-waves with double frequency. Comparative estimations of fields of linear waves, field of second harmonics and field of normal waves with double frequency have been done. Under condition of definite realistic set of process parameters the estimation of nonlinear anharmonical effects, which appear while normal SH-wave excitation, has been obtained. Also the kinematics and energetic characteristics of nonlinear waves have been investigated.
Citation
Kurennaya K.: Excitation of nonlinear normal shearing waves in crystal half-layer, CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7
|
