Effect of tensile and compressive stress on dynamic loop shapes and power losses of Fe-Si electrical steels

Magnetic energy losses and hysteresis loops have been determined in Fe-Si n on-oriented laminations as a function of the applied compressive and tensil e stress, made to range between -50 and +50 MPa. The loss separation analys is has been carried out in association with hysteresis loop calculation by means of the Dynamic Preisach Model. The strong modifications to the hyster esis loop and area introduced in a specific way by compressive stresses can be correctly accounted for by modelling. (C) 1999 Elsevier Science B.V. Al l rights reserved.