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http://dx.doi.org/10.5000/EESK.2010.14.2.075

Seismic Response Prediction of a Structure Using Experimental Modal Parameters from Impact Tests  

Cho, Sung-Gook ((주)제이스코리아)
Joe, Yang-Hee (인천대학교 토목환경공학과)
So, Gi-Hwan (인천대학교 토목환경공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.14, no.2, 2010 , pp. 75-84 More about this Journal
Abstract
An in-cabinet response spectrum should be generated to perform the seismic qualification of devices and instruments mounted inside safety-related electrical equipment installed in nuclear power plants. The response spectrum is available by obtaining accurate seismic responses at the device mounting location of the cabinet. The dynamic behavior of most of electrical equipment may not be easily analyzed due to their complex mass and stiffness distributions. Considering these facts, this study proposes a procedure to estimate the seismic responses of a structure by a combination of a test and subsequent analysis. This technique firstly constructs the modal equations of the structure by using the experiment modal parameters obtained from the impact test. Then the seismic responses of the structure may be calculated by a mode superposition method. A simple steel frame structure was fabricated as a specimen for the validation of the proposed method. The seismic responses of the specimen were estimated by using the proposed technique and compared with the measurements obtained from the shaking table tests. The study results show that it is possible to accurately estimate the seismic response of the structure by using the experimental modal parameters obtained from the impact test.
Keywords
Seismic qualification; In-cabinet response spectrum; Impact test; Experimental modal parameter; Mode superposition;
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Times Cited By KSCI : 1  (Citation Analysis)
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