Title :
Magnetic force computation in permanent magnets using a local energy coordinate derivative method
Author :
Fu, W.N. ; Zhou, P. ; Lin, D. ; Stanton, S. ; Cendes, Z.J.
Author_Institution :
Ansoft Corp., Pittsburgh, PA, USA
fDate :
3/1/2004 12:00:00 AM
Abstract :
The definition of energy/coenergy in permanent magnets (PMs) is still in dispute when virtual work is used to compute magnetic forces using finite-element methods. There is also no current practical method for computing forces when PMs touch objects. These problems are addressed in this paper in terms of a new definition of energy/coenergy in PMs and by using shell elements. The results are verified by analytical computations.
Keywords :
finite element analysis; magnetic forces; permanent magnets; electromagnetic fields; electromagnetic forces; finite-element methods; local energy coordinate derivative method; magnetic force computation; permanent magnets; shell elements; virtual work; Distributed computing; Electromagnetic forces; Finite element methods; Helium; Magnetic analysis; Magnetic forces; Magnetic materials; Permanent magnets; Physics computing; Uncertainty;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.824774
