Wave propagation simulation in ANSYS

Hi,

I am trying to simulate wave propagation in ANSYS for the following model,

Model size = 1e-6 m x 1e-6 m

I am using plane 182 elements with plane strain option. The material properties are E = 74 GPa, Poisson's ratio = 0.1 and density = 2530 kg/m3.

The model is constrained completely at the base. I am applying a modulated sinusoidal burst (450 GHz) at the top left node of my model. The impulse duration is 1e-11 secs. The total simulation time is 1e-9 secs. The time step I am using is 1e-12 secs. I am using 100 elements along the length and width of the model. Thus my element size is 1e-8 m.

When I run the simulation with the above parameters I don't see any waves. I only see my input function at all the nodes in my model but with varying amplitudes during the duration of my impulse. After impulse, I dont see any wave propagation, the displacement curve (both 'y' displacement and 'x' displacement) goes flat for all the nodes.

I am not able to figure out where I might be going wrong, any help would really appreciated. I can give any additional information of my model and the code that I am using if needed. Thank you.

-Deepak Patil