A Study on Model Reduction and Damage Detection

• Main Authors: Kuan-hong Chen, 陳冠宏
• Other Authors: Dar-Yun Chiang
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/35955162585146388211

碩士 === 國立成功大學 === 航空太空工程學系 === 89 === The damage of structure can be detected by using output error method and the method of model updating with data from modal testing. The data usually used in output error method to detect damage are natural frequency and mode shapes. This thesis start by studying model reduction and how to get the reduced model of structure from modal data, then the frequency of “normal mode” in CBM(Craig and Bampton method) will be used in output error method as a objective to improve the result of damage detection. Finally, the methods are demonstrated by numerical simulation.