Development of the experimental spatial matrix identification method (theory and basic verification with a frame structure)

In the present paper, the authors propose a new experimental method of iden tifying the set of spatial matrices. This method identifies the spatial mat rices, namely mass matrix, damping matrix and stiffness matrix, which descr ibe the properties of dynamic structures, using experimentally measured FRF s (Frequency Response Functions) within the frequency range of interest. In this paper, the theory developed for this method is introduced. The validi ty of the proposed method is verified by its application to an actual frame structure using experimental FRFs measured by hammering tests. (C) 1999 Ac ademic Press.