Dynamic Parameter Extraction of Multiple Tuned Mass Dampers and Primary Structure based on Vibration Measurements of the Combined Building-MTMD System

• Main Authors: Qi-Hong Huang, 黃啟宏
• Other Authors: 林其璋
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/27087995932728436436

碩士 === 國立中興大學 === 土木工程學系所 === 102 === In this thesis, a methodology is develped to extract the dynamic parameters of multiple tuned mass dampers (MTMD) and the primary structure itself from the dynamic response measurements of the combined primary building-MTMD system. MTMD is composed of a number of TMDs and its control effectiveness is achieved by arranging these TMDs to have an appropriate frequency distribution around the controlled mode of the primary building. Therefore, it is important to know the parameters of the primary structure as well as the MTMD to ensure the tunning condition. In practical, an MTMD set may be assembled in-situ along with the construction of a building. In such a case, the dynamic properties of the MTMD device and the building cannot be tested individually. For this purpose, a methodology is developed based on the eigen-parameters of any two complex modes of the combined building-MTMD system. By means of the theoretical derivation in state-space, the non-classical damping feature of the system is characterized. It can be combined with a system identification technique as a procedure to achieve the goal on the basis of acceleration measurements of the building-MTMD system. The proposed procedure was verified numerically and experimentally. Both results show that the procedure is able to extract parameters of the MTMD and the primary building, and it is useful for MTMD implementation practices.