Dynamic Condensation by System Identification and Application to Structural Modification

• Main Authors: S. Y. Chen, 陳炘鏞
• Other Authors: Y. G. Tsuei; M. S. Ju
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/60723620027524477292

博士 === 國立成功大學 === 機械工程研究所 === 84 === A frequency-domain technique is developed in this thesis. The major goal of this method is to extract the normal modes, to identify the system matrices and to modify the structure characteristics. First, a relationship between the normal an By using the same relationship, a method for estimating the system matrices of a dynamic system is developed. Independent from the mass and stiffness matrices, the damping matrix is calculated alone, while the mass and the stiffness matrices are identif Furthermore, this idea is extended from a complete system to deal with an incomplete system. It is shown that the equivalent condensed system matrices can also be obtained by this method. These equivalent condensed system matrices represent a dynamic c Both simulation and experimental examples are carried out to illustrate the applicability of the present methods. The results indicate that these methods for extracting the normal modes, estimating the system matrices and modifying the structure characte