Title :
Weak coupling of magnetic and vibrational analysis using local forces
Author :
Delaere, Koen ; Sas, Paul ; Belmans, Ronnie ; Hameyer, Kay
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ., Leuven, Belgium
Abstract :
A weak coupling between magnetostatic and elasticity equations is derived from energy considerations for electric machines. The coupling term results directly into a finite element expression for the nodal electromagnetic forces, which can be used as source terms for an elasticity or vibration analysis. The relative contribution of the stator´s modal shapes in the deformation excited by this force distribution is calculated. As an example, the coupling is used to analyse the vibrational behaviour of a 6/4 switched reluctance machine
Keywords :
electromagnetic fields; electromagnetic forces; finite element analysis; machine theory; magnetostatics; modal analysis; reluctance machines; stators; vibrations; 6/4 switched reluctance machine; elasticity equations; electric machines; finite element expression; force distribution; magnetostatic equations; nodal electromagnetic forces; stator modal shapes; vibrational behaviour; weak coupling; Elasticity; Electric machines; Electromagnetic analysis; Electromagnetic coupling; Electromagnetic forces; Equations; Finite element methods; Magnetic analysis; Magnetoelasticity; Magnetostatics;
Conference_Titel :
Electric Machines and Drives, 1999. International Conference IEMD '99
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5293-9
DOI :
10.1109/IEMDC.1999.769162
