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Vibration Analysis of Network Communication Equipment  

Lee, Jae-Hwan (충남대학교 항공우주선박해양공학부)
Kim, Young-Joong (한국기계연구원 e-엔지니어링 연구센터)
Kim, Jin-Sup (한진중공업 기술본부)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.20, no.4, 2007 , pp. 463-468 More about this Journal
Abstract
Some network equipments made in Korea were exposed to severe earthquake in Japan several years ago. More than a hundred slim base transfer network stations had been seized with the severe earthquake at Nigata and it was reported that less than fifteen sets showed blackout by interruption of electricity, not by the structural failure. The purpose of this paper is to check the structural safety of the network equipments by performing table test, and the static and dynamic finite element analysis. For the dynamic test, the station weighing 200 kg was subjected to the Zone 3 earthquake loading of GR-63-CORE on the shaking table to obtain the dynamic responses to compare with the analysis results. It is shown that the FE analysis results are a little bit larger than that of the experimental values. And the sensitivity analysis and optimization for the natural frequency is performed and it is found that the first natural frequency is sensitive to small design change as shown in the results. And the dynamic response of optimized design is less than the original design.
Keywords
network equipment; earthquake; shaking test; spectrum response analysis; design sensitivity; optimization;
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