Punching electrical steels drastically alters their magnetic properties nea
r the cutting edges, which should be accounted for when designing machines.
A simple magneto-mechanical coupled finite element analysis, suitable for
fully process grades, is proposed in order to model the consequences of thi
s local degradation of the material on the global behavior of a machine. Th
e model is used to study the effective section of the teeth of a punched st
ator; calculated results are compared with experimental data and a good agr
eement is found.