期刊
NUCLEAR ENGINEERING AND TECHNOLOGY
卷 43, 期 6, 页码 573-582出版社
KOREAN NUCLEAR SOC
DOI: 10.5516/NET.2011.43.6.573
关键词
In-cabinet Response Spectrum; Electrical Cabinet; In-situ Test; Impact Hammer; State-space Model; Seismic Response
资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea Ministry of Knowledge Economy [201016201 00020]
The in-cabinet response spectrum is used to define the input motion in the seismic qualification of instruments and devices mounted inside an electrical cabinet. This paper presents a procedure for generating the in-cabinet response spectrum for electrical equipment based on in-situ testing by an impact hammer. The proposed procedure includes an algorithm to build the relationship between the impact forces and the measured acceleration responses of cabinet structures by estimating the state-space model. This model is used to predict seismic responses to the equivalent earthquake forces. Three types of structural model are analyzed for numerical verification of the proposed method. A comparison of predicted and simulated response spectra shows good convergence, demonstrating the potential of the proposed method to predict the response spectra for real cabinet structures using vibration tests. The presented procedure eliminates the uncertainty associated with constructing an analytical model of the electrical cabinet, which has complex mass distribution and stiffness.
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