How can I make infinite elements in anisotropic material?

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Stephen Mosey

Instead of trying to add an infinite number of elements to your mesh, at the boundary of the cylinder you could implement several Perfectly Matched Layers. The PML will heavily attenuate any waves that enter them, without causing reflections.

Hope this helps.

Zhang Bao Qin

Mr Stephen Mosey:

thank you,I've have learn from you.