Study of Roller Type Seismic Isolation Device for Works of Art

This paper describes a roller type isolation device for individual showcases and individual works of art. The isolation device consists of two layers that form a XY-motion mechanism for twodimensional horizontal motion ; each layer consists of rails having a circular-linear-combined shape in the ver...

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Bibliographic Details
Published inNihon Kikai Gakkai ronbunshū. C Vol. 17; no. 3; pp. 813 - 820
Main Authors Ueda, Satoshi, Akimoto, Masao, Enomoto, Takao, Fujita, Takafumi
Format Journal Article
LanguageJapanese
Published 01.03.2005
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Summary:This paper describes a roller type isolation device for individual showcases and individual works of art. The isolation device consists of two layers that form a XY-motion mechanism for twodimensional horizontal motion ; each layer consists of rails having a circular-linear-combined shape in the vertical cross-section to produce a restoring force, wheels, and fiction dampers comprising the wheels and the axles. Because the effective natural period of the device is independent of the mass, a long effective natural period can be achieved even for light equipment such as showcases. Shake table tests were carried out, showing good isolation performance of the device and confirming validity of the analytical model developed in this study.
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ISSN:0387-5024