Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2014.10a
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- Pages.106-109
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- 2014
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- 1598-2548(pISSN)
Dynamic Characteristics Identification of Cylindrical Structure Using Dynamic Substructuring Method
Dynamic Substructuring 기법을 이용한 원통형 구조물의 동특성 확인
- Choi, Youngin ;
- Park, No-Cheol ;
- Lee, Sang-Jeong ;
- Park, Young-Pil ;
- Kim, Jinsung ;
- Park, Chanil ;
- Roh, Woo-Jin
- 최영인 (연세대학교 기계공학과) ;
- 박노철 (연세대학교 기계공학과) ;
- 이상정 (연세대학교 기계공학과) ;
- 박영필 (연세대학교 기계공학과) ;
- 김진성 (한국원자력안전기술원) ;
- 박찬일 (한국원자력안전기술원) ;
- 노우진 (한국원자력안전기술원)
- Published : 2014.10.29
Abstract
In order to obtain dynamic behaviors of complex structures, it demands large amounts computational cost and time to perform the numerical analysis. The model reduction method helps these problems by dividing the full model into primary and unnecessary parts. In this research, we perform the modal analysis using the dynamic substructuring method, which is one of the model reduction methods, in order to obtain the dynamic characteristics of the cylindrical structures efficiently. To select the master degrees of freedom (dofs), we consider the mode shapes of the cylindrical structures. And then, we identify the validity of the dynamic substructuring method by applying the method to the simple cylinder and core support barrel (CSB) which is one of the reactor internals with the cylindrical shape. The results demonstrate that the dynamic characteristics from the dynamic substructuring method are well matched with the original method.
Keywords
- Model Reduction Method;
- Dynamic Substructuring;
- Finite Element Method;
- Dynamic Characteristics;
- Reactor Internals