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Vibration Transmission Analysis on a Superconducting Seismic Isolation Device With PM and Copper Plate Systems

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8 Author(s)
Sasaki, S. ; Dept. of Electr. Eng., Tohoku Univ., Sendai, Japan ; Shimada, K. ; Katana, T. ; Miyagi, D.
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We have devised a magnetic levitation type superconducting seismic isolation device using pinning effect of HTS bulk and investigated the characteristics of vibration transmission and damping in a model device with two types of permanent magnet (PM) systems with copper plates; the one was for stable stationary levitation named “PM-PM system” and the other was for improving damping effect named “vibration absorbing system (VAS)”. To clarify the electromagnetic behaviors of these systems, we calculated the distributions of eddy current and magnetic force within the copper plates during a horizontal vibration using a numerical simulation code based on the three-dimensional finite element method (3D-FEM) analysis. As the results, the vibration transmission was reduced due to the Lorenz force generated in the copper plate.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:22 ,  Issue: 3 )

Date of Publication:

June 2012

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