DocumentCode :
1449762
Title :
Modeling effects of varying torsion in magnetized steel
Author :
Sablik, M.J. ; Jiles, D.C.
Author_Institution :
Southwest Res. Inst., San Antonio, TX, USA
Volume :
36
Issue :
5
fYear :
2000
fDate :
9/1/2000 12:00:00 AM
Firstpage :
3248
Lastpage :
3250
Abstract :
In this paper, we develop a model for magnetization changes in a steel rod under varying torsion in a constant applied magnetic field. At any point on the surface of the rod under torsion, the magnetization changes, in a small region about the point, are driven by biaxial stress changes, which are equal in magnitude, with one stress change tensile and the other compressive, and with the stresses acting at ±45 degrees with respect to the rod axis, tangentially to the surface of the rod. In this paper, we demonstrate how to extend the “law of approach” of and the energy balance equation to irreversible magnetization changes under varying torsional stress at constant magnetic held. As an illustration of how the model is used, a prediction is made showing changes in axial flux density at the surface of the rod when the torsion is cycled five times between zero and a maximum value of torque
Keywords :
ferromagnetic materials; magnetisation; magnetomechanical effects; steel; torsion; energy balance; irreversible magnetization; law of approach; magnetic field; magnetic flux density; steel rod; torque; torsional stress; Compressive stress; Equations; Magnetic fields; Magnetic flux; Magnetic hysteresis; Magnetic sensors; Magnetization; Steel; Tensile stress; Torque;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.908756
Filename :
908756
Link To Document :
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