Analytical approach calculating eigenfrequencies and modes of stator cores in AC machines

2012 ◽  
Vol 61 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Paweł Witczak

Analytical approach calculating eigenfrequencies and modes of stator cores in AC machinesThe paper describes analytical approach solving the problem of dynamic analysis of two-dimensional fields of vibrational displacements and rotations caused by magnetic forces acting on stator of AC machine. Final set of three differential equations converted into algebraic ones is given and it is confronted with numerical solutions obtained by finite element method.

2001 ◽  
Vol 17 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Der-Chang Lo ◽  
Der-Liang Young

ABSTRACTIn this study, the motion of incompressible viscous fluid in a two-dimensional domain is solved by the finite element method using the velocity-vorticity formulation. To demonstrate the model feasibility, first of all the steady Stokes flow in a square cavity are computed. The results of square cavity flow are comparable with the numerical solutions of Burggraff (1966, FDM) [1]. Then the unsteady Navier-Stokes flow are computed and compared with other models [1∼4]. The results reveal that finite element analysis is a very powerful approach in the realm of computational fluid mechanics.


2007 ◽  
Vol 43 (4) ◽  
pp. 1441-1444 ◽  
Author(s):  
Katsuhiro Hirata ◽  
Tadashi Yamamoto ◽  
Tadashi Yamaguchi ◽  
Yoshihiro Kawase ◽  
Yuya Hasegawa

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