Piezoresistive modeling

Hello all

I want to simulate a piezoresistive beam with Comsol.
I was looking to find an example of piezoresistive modeling to find out what module they usually use and how are the settings but i didn't find any
It seems there was an example of "piezoresistive elevator button" before for old version of Comsol. But it is not avail;able anymore.
Can anyone send me this example or any other helpful link about piezoresistive simulation by Comsol?

Best
Bahar