Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2005.11a
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- Pages.852-855
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- 2005
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- 1598-2548(pISSN)
Structural Dynamics Modification for a Large Structure using Component Mode Synthesis Methods
구조합성법을 이용한 큰 구조물에서의 구조동특성변경법
- Lee, Moon-Seok (KAIST Mechanical Engineering Novic) ;
- Park, Youn-Sik (KAIST Mechanical Engineering Novic) ;
- Park, Young-Jin (KAIST Mechanical Engineering Novic)
- Published : 2005.11.01
Abstract
Structural Dynamic Modification(SDM) is a technique to improve structure's dynamic characteristics by adding and removing substructures or changing material properties and shape of structures. This paper describes SDM techniques applied to a large structure with too many DOFs. The goal of this SDM technique is to modify a targe structure efficiently for its natural frequencies to avoid excitation frequencies. In this case, models reduced by Component Mode Synthesis(CMS) method that is a coupling technique are used to analyze a large structure efficiently. This paper considers a helicopter deck model with 55,000 DOFs as an application.