A Study of an Isolation Table Using Horizontal Circular Arc Springs and Magnetic Damping

In this paper, a two dimensional isolation table using circular arc springs and a magnetic damper, which has a simple construction, low height and the capability of vibration isolation in every horizontal direction, is proposed. The isolation table is composed of eight circular arc springs, twelve f...

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Published inNihon Kikai Gakkai ronbunshū. C Vol. 17; no. 2; pp. 426 - 433
Main Authors Kodaira, Yuichi, Ohmata, Kenichiro, Taguchi, Motoyuki, Shimosaka, Haruo, Shimoda, Hirokazu
Format Journal Article
LanguageJapanese
Published 01.02.2005
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Summary:In this paper, a two dimensional isolation table using circular arc springs and a magnetic damper, which has a simple construction, low height and the capability of vibration isolation in every horizontal direction, is proposed. The isolation table is composed of eight circular arc springs, twelve free bears, a magnetic damper, a table board and a base board. It has approximately the same stiffness and damping coefficient in every direction in the horizontal plane. The trial isolation table was made and its resisting force characteristics were discussed theoretically and experimentally. The seismic responses and the frequency responses of the table installed a mass or a tower-like structure model were measured using an electrohydraulic-type shaking table. The experimental results were compared with the calculated results, and the effects of vibration suppression of the table were confirmed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0387-5024