AQ: What is ANSYS software?
This is a finite element analysis tool for various applications.
In power we get the voltage (stress) distribution in equipment like cables, bends in cables etc including stator winding of generators.
Once you go deep into it the applications become more apparent. In mechanical engineering using FEM you can identify the stresses in each member of the structure and so on.
I believe ANSYS, Abacus, Nashtran etcare extensively used for detailed analysis of stresses including electrical stresses. Some of the above offer introductory courses on line.
One needs extensive and considerable insight into partial differential equations and advanced mathematics.