V.I.Gulyayev, V.V.Gaidaichuk, G.M.Ivanchenko Focussing of plane discontinuity wave by ellipsoidal interface of transversally isotropic media |
Acoustic bulletin, Vol. 5 ¹ 2, (2002) |
| A problem on modification of the strong discontinuity quasi-primary and quasi-secondary wavefronts, formed at incidence of the plane discontinuity wave on ellipsoidal boundary subdividing two elastic transversally isotropic media with different physical properties, is solved using zero-order approximation of the ray method. Synthesis of a method of continuation of solution by a parameter and the Newton algorithm is applied to solve the Snellius non-linear equations. Cases of scattering and focussing of the discontinuity waves are analyzed as the particular cases of the fronts' bifurcation and formation of caustics. |
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KEY WORDS: plane wave, transversely isotropic medium, interface, ellipsoid, acoustic focusing |
| TEXT LANGUAGE: Ukrainian |