coil. Although in reality, the coils are rather complex in their mechanical
structure, they are treated as solid cylindrical conductors
here, so pressure and tensile stress are both possible inside
the coils. This is to be independent of any particular winding
support structure when calculating the forces for the purpose of
comparison.
Following these approximations the specific field calculation
method employed shall be explained along with the comparison
of 2-D and 3-D calculations. In addition, details of the method
used for calculating the axial and radial forces will be discussed
in the following sections.