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Shaking Table Tests of Static Dynamics Interchangeable-Ball Pendulum System for Motion Sensitive Equipment

[+] Author Affiliations
C. S. Tsai, Wen-Shin Chen, Ching-Pei Tsou, Chen-Tsung Yang

Feng Chia University, Taichung, Taiwan, R.O.C.

Paper No. PVP2008-61072, pp. 181-188; 8 pages
  • ASME 2008 Pressure Vessels and Piping Conference
  • Volume 8: Seismic Engineering
  • Chicago, Illinois, USA, July 27–31, 2008
  • Conference Sponsors: Pressure Vessels and Piping
  • ISBN: 978-0-7918-4831-9 | eISBN: 0-7918-3828-5
  • Copyright © 2008 by ASME


Recently, the high-tech industry has become a key industry for economic development in many countries. However, motion sensitive equipments located in these industrial buildings are vulnerable during earthquakes, which may cause huge economic loss. In this study, an isolator for safeguarding the motion sensitive equipment, namely, the static dynamics interchangeable–ball pendulum system (SDI-BPS) is proposed and investigated to examine its protective capability for the motion sensitive equipment during earthquakes through a series of shaking table tests. The experimental results illustrate that the SDI-BPS isolator can provide significant damping to reduce the large bearing displacement and size, and avoid the stress concentration, which can cause damage or scratches on the sliding surface of the isolator, to prolong its life span of service. The SDI-BPS isolator also provides excellent capability in protecting the motion sensitive equipment and exhibits a stable behavior under long terms of service loadings and earthquakes.

Copyright © 2008 by ASME



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