EFFECTS OF MECHANICAL STRESS ON SOFT MAGNETIC MATERIALS UNDER ROTATIONAL MAGNETIZATION

C. Krell, N. Baumgartinger, E. Leiss, H. Pfützner

Abstract

This paper concerns effects of mechanical stress on soft magnetic silicon iron sheets subject to rotational magnetization (RM). RM is typical for armatures of rotating machines and for T-joint regions of transformer cores. In both cases, distinct mechanical stress may arise, e.g., from temperature changes or from clamping. Simulation of such magneto-mechanical conditions on a specifically designed test apparatus shows that tensile (or compressive) stress of several MPa intensity yields distinct effects on all three permeability, energy losses and magnetostriction.

Keywords

rotational magnetization, magnetic losses, magnetostriction, stress effects, soft magnetic materials

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IMEKO-WC-2000-TC4-P139.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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