000010022 001__ 10022
000010022 005__ 20141205154138.0
000010022 04107 $$aeng
000010022 046__ $$k2008-10-12
000010022 100__ $$aFurukawa, Hironori
000010022 24500 $$aActive-Passive Seismic Isolation System for Monocrystal Pullers

000010022 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010022 260__ $$b
000010022 506__ $$arestricted
000010022 520__ $$2eng$$aThis paper describes a seismic isolation system for monocrystal pullers. In a monocrystal puller, a monocrystal is suspended by a wire through an extremely narrow neck, and it grows longitudinally. The neck is easily broken due to the collision between the monocrystal and the wall of the puller; moreover, the regular growth of the monocrystal is stunted even during weak earthquakes. Currently, passive isolation devices are used for preventing equipment malfunctions due to earthquakes. However, in the case of the monocrystal puller, the monocrystal and wire form a pendulum with a considerably long time period. Passive isolation systems cannot sufficiently reduce the response of the pendulum to earthquakes because they may cause the pendulum to resonate. Therefore, an active isolation system is required. In this study, such a system using an AC servomotor was developed. Through shake table tests, it was demonstrated that this system could effectively reduce the displacement of the monocrystal model.

000010022 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010022 653__ $$aSeismic Isolation, Active Isolation, Monocrystal Puller, Linear Motor, Simulation Analysis

000010022 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010022 720__ $$aFurukawa, Hironori$$iFujita, Takafumi$$iKamada, Takayoshi$$iMisoka, Hideaki
000010022 8560_ $$ffischerc@itam.cas.cz
000010022 8564_ $$s580029$$uhttps://invenio.itam.cas.cz/record/10022/files/12-01-0212.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 12-01-0212.
000010022 962__ $$r9324
000010022 980__ $$aPAPER