In the comsol simulation of the elastic wave metasurface, what module is used? How is the incident field of a periodic unit set (boundary load/specified displacement)?
And for example, when the longitudinal wave is incident, how to integrate the amplitude (p0, p1, p-1, s0, s1, s-1) of each diffraction order of the longitudinal wave/transverse wave?
Dear Wenyue Liang
Check out the following paper, it might help you:
Article Elastic metasurfaces for splitting SV- and P-waves in elastic solids
Usually, the solid mechanics module in comsol multiphysics can be used to simulate wave propagation in elastic solids and wave propagation in elastic metamaterials can be conducted by modelling the geometry as the required metamaterial.
There are two different modules you can use to simulate the propagation of the elastic waves:
1- Acoustic module > elastic wave.
2- Structural mechanics.
However, the solution output of these two modules is not totally the same. for instance, if you want to calculate the acceleration then you have to use the Structural mechanic module as this value is not available in the Acoustic module.
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