TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Analysis of Functional Stability of Permanent Magnet Bearings
(Analiza stabilităţii funcţionale a lagărelor cu magneţi permanenţi)
Vol LVIII • No. 2bis/2006
Ion Voncilă, Cristian Munteanu, Răzvan Buhosu
?Dunarea de Jos? University of Galaţi,
e-mail: ion.voncila@ugal.ro

 Keywords   bearings, permanent magnet bearings, stability of magnetic bearings.

 Abstract
This work is dealing with a comparative analysis of functional stability of passive magnetic bearings made out of permanent magnets from rare earth materials (Nd-Fe-B). Functional stability is studied both from the point of view of variation of forces density developed in bearings ? on axial, respectively radial direction and from the point of view of variation of electromagnetic flux density in the air gap, with alteration of distance between magnets. The comparative analysis has kept a check on the behaviour of passive magnetic bearings for two classes of permanent magnets: anisotropic and isotropic.

 Rezumat
In cadrul lucrării este prezentată o analiză comparativă a stabilităţii funcţionale a lagărelor magnetice pasive realizate cu magneţi permanenţi din pamânturi-rare (Nd-Fe-B). Stabilitatea a fost studiată atât din punctul de vedere a variaţiei forţelor specifice dezvoltate în cadrul lagărelor ? pe direcţie axială, respectiv, radială ? cât şi din punctul de vedere a variaţiei inducţiei magnetice din întrefier, la modificarea distanţei dintre magneţi. Analiza comparativă a urmărit comportarea lagărelor magnetice pasive pentru două clase de magneţi permanenţi: anizotropi, respectiv, izotropi.



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