Revisiting a Novel Structural Modification Method for Linear and Nonlinear Dynamic Reanalysis of Machinery

Date

2010-10

Author

Özgüven, Hasan Nevzat

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In this paper, the structural modification method developed by the author more than two decades ago is revisited. The method is used to calculate the frequency response functions of a modified system from those of the original system and the system matrices of the modifying part. Modification can also be in the form of coupling another system to the original one. After summarizing the theory, various applications of the method used in different recent research areas, ranging from machine tool dynamics to vibro-acoustics and from distributed structural modifications to non-linear dynamic coupling, are presented in this paper. The method is most advantageous when the degree of freedom of the system is very large and modifications are local. Therefore, it is very suitable for structural dynamics problems, as well as for any machine dynamic problem where large ordered finite element models are employed. An example from machine dynamics application is also given in the paper.

Subject Keywords

Structural modification, dynamic reanalysis, forward modification, structural coupling, nonlinear dynamic coupling

URI

https://hdl.handle.net/11511/105351

Collections

Department of Mechanical Engineering, Conference / Seminar