측정 모달 데이터를 이용한 골조의 강성행렬 및 질량행렬 추정에 관한 연구

A Study on Estimated Stiffness and Mass Matrices from Modal Data at Measured Points

In this study, a method that estimates stiffness and mass matrices of shear building from modal test data is presented. This method applied of building depends on the number of measurement points that are less in number than the total structural degrees of freedom, and on the first two orders of structural mode measured. By means of this method it is possible to use modal data of unmeasurable points to estimate total stiffness and mass matrices of structure. Some examples are studied in this paper, and its result shows that this method is reliable.