최적화기법을 응용한 주파수영역에서의 구조물 손상도 추정에 관한 연구(I) -손상의 모형화-

초록

A system identification technique based on the frequency changes is proposed to enhance the damage detection in the flexural structures. For this purpose, an optimization scheme originally suggested by Hassiotis (1993) is further modified to include the changes of the mode vectors. In addition, a smeared crack model within beam element is also developed to identify small scale damages. The two models developed in this study are incorporated into the updated optimization scheme which is readily available in the commercial packages. Comparisons with the numerical and the experimental tests will be explained in the accompanying paper and the future work on the system identification is discussed in detail.

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