STRUCTURAL DYNAMIC MODIFICATION USING MODAL ANALYSIS DATA

摘要

The effects of local modification on the dynamic characteristics of existing structures were studied experimentally in this paper. In this study, the frequency response functions of the proposed modified structure were synthesized from the frequency response data of the existing structure and the characteristics of the local modification. The dynamic characteristics of the proposed modified structure could then be identified using the synthesized transfer function. All data processing were performed on a commercial modal analysis system. The method was applied to a free-free plate with mass modification.