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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29530


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9339
An Empirical Formula for Seismic Test of Telecommunication Equipments
Abstract:
Antiseismic property of telecommunication equipment is very important for the grasp of the damage and the restoration after earthquake. Telecommunication business operators are regulating seismic standard for their equipments. These standards are organized to simulate the real seismic situations and usually define the minimum value of first natural frequency of the equipments or the allowable maximum displacement of top of the equipments relative to bottom. Using the finite element analysis, natural frequency can be obtained with high accuracy but the relative displacement of top of the equipments is difficult to predict accurately using the analysis. Furthermore, in the case of simulating the equipments with access floor, predicting the relative displacement of top of the equipments become more difficult. In this study, using enormous experimental datum, an empirical formula is suggested to forecast the relative displacement of top of the equipments. Also it can be known that which physical quantities are related with the relative displacement.
Digital Object Identifier (DOI):

References:

[1] Telcordia, Network Equipment Building System(NEBS) Requirements: Physical Protection, GR-63-CORE, Issue 3, 2006.
[2] ETSI EN 300-019 v2.2.2, Environmental conditions and environmental tests for telecommunications equipment, 2003.
[3] Heung-Shik Lee, Myung-Gu Kim and Chongdu Cho, "Seismic Analysis on a Control Panel of (Nuclear) Power Plant", Journal of the KSNVE, 15-6, 652-659 (2005).
[4] Bong Jin Kang et al., "Study of Earthquake-resistant Design for Wireless Base Station Using Dynamic Response Analyses and Tests", The 17th International Congress on Sound & Vibration, (2010).
[5] Chi Ming Wong, "Seismic Response of Telecommunications Equipment Supported on Access Floors", Doctoral Thesis, McMaster University, (1990).
[6] Ronald Ziemian, Derek Mostoller and Kenneth Philogene, "Simulating Seismic Response Behavior of Telecommunication Equipment", Journal of Structural Engineering, 122(10), 1247-1249, (1996).
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