Structural Modifications with Additional DOF - Applications to Real Structures

Date

2009-2

Author

Canbaloğlu, Güvenç
Özgüven, Hasan Nevzat

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In structural dynamics, it is important to obtain the dynamic properties of a modified structure from those of the original structure, especially for large systems. In this study, an effective structural modification method for modifications with additional degrees of freedom is applied to a real structure with distributed modifications in order to investigate the performance of the method. In this method, which has been proposed in an earlier study by one of the authors of this paper, the frequency response functions (FRFs) of the modified structure are calculated from those of the original system and system matrices of the modifying structure. The performance of the method is investigated by applying it to GARTEUR SM-AG19 model with modifications in the form of beams attached under the wings acting as stiffeners causing flexural rigidity. The receptances calculated by using the structural modification method are compared with measured ones. A very good agreement is observed between predicted and measured results, and it is concluded that the structural reanalysis method proposed can be successfully and efficiently used for structures with distributed modifications.

URI

https://hdl.handle.net/11511/105121

Collections

Micro-Electro-Mechanical Systems Research and Application Center (MEMS), Conference / Seminar