Erik Kostson
Ansys Employee

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You seem to be in 3D, start with the 2D example it should run faster , and axisymmetric.
SO it looks like it is 3D. Set it to 2D. See here how to do that (make sure the geometry is in the XY plane as explained in previous posts):

I notice that the rod is very small - can you also make like a 0.002 m radius and 0.2 m length(y-dir).

Also make sure that the element size is like wavelength_guidedwave/8. so if it travels at 5000 m/s then mesh = (1/8)*5000/f_centre (5MHZ?).

Also turn off large deflections and auto time stepping (so use a fixed time step of 1E-8 s).

Thank you