Guilin Sun
Ansys Employee

 

PEC (perfect electrical conductors) can be bulk (3D) or 2D sheet. It is in the Material Database:

It has infinite conductivity, so no need to set its material property.

For 2D sheet: https://optics.ansys.com/hc/en-us/articles/360034901593-2D-Rectangle-Simulation-Object

The default 2D sheet material is PEC: