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지용관(Ji Yong Kwan),김민규(Kim Min Gyu),장상균(Chang Sang Gyoon),이대희(Lee Dae Hee) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.4
The thin rectangular plate storage structure which temporarily stores fuel assembly or control element assembly is connected by bolting between clamping plates and embedment plates on the wall. The fuel assembly is vertically rested on the bar plate located in the bottom of structure. Also the reinforcing plates embracing thin rectangular plate storage structure are installed to support the lateral loads. The three sides of reinforcing plates are fixed and the remaining one side is free. The finite element model using ANSYS Workbench is made from three dimensional design model using Pro/Engineer to generate the analysis model similar to the storage structure for accurate modal analysis. The embedment plates of structure are fixed as a boundary condition of the analysis model. To evaluate the dynamic characteristics of this structure due to storage of the fuel assembly, two cases of modal analysis with and without consideration for fuel assembly are performed. To evaluate structural integrity for seismic loads, the modal analysis is required prior to dynamic response analysis reflecting the accurate dynamic characteristics of structure. Therefore, the modal analysis for this structure using 3 dimensional finite element model considering the real and actual boundary condition and geometric configuration is performed in this paper.
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