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This paper describes an improved multi-mesh modification method for the three-dimensional finite element method (3-D FEM), which can simulate the dynamic characteristics of electrical devices with long strokes. The availability of the method is clarified through the dynamic characteristics analysis of a circuit breaker with oil dashpot.
In this paper, we proposed an analysis method of long-time behavior of the electromagnetic device. The dynamic characteristics of a circuit breaker with oil dashpot are clarified using the proposed method. Furthermore, the effectiveness of calculated results is verified through the comparison with the measured ones.
When the claw-poled stepping motor is rotated at high speed, the torque remarkably deteriorates because of the eddy current generating in the stator core. In this paper, the influence of the stator core materials on the dynamic characteristics of a claw-poled stepping motor is evaluated using the 3-D finite element method. The validity of the calculated results is clarified through the comparison...
We are developing a shear-type compact MR brake (SCMRB), which can control the share stress because the viscosity of MR fluid varies by the magnetic field and shear rate. In order to design the high response brake, it is important to evaluate the response characteristics by taking into account the non-linearity of stress versus flux density and stress versus rotation speed. This paper presents the...
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