Transformation ray method: Controlling high frequency elastic waves (L)
(Color online) A sketch of an elementary ray tube in inhomogeneous anisotropic medium with an elastic ray and a family of rays nearby. and are two points on the ray used in the recurrent computation. denotes a cut from the ray tube by the wave fronts and is the cross section of the ray, which can be calculated through some geometry relation by using . is the unit vector perpendicular to , representing the direction of the ray.
(Color online) Ray traces of the elastic rotator calculated by transformation ray method, they are same as those evaluated by FEM simulation.
(Color online) Total displacement along the rays evaluated by transformation ray theory (symbols), FEM simulation (solid line) at incident angles: (a) 0°, (b) −22.5°, (c), −45°, and (d) −67.5°.
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