Enhanced Frequency Response Function Technique as Tool for Mode Separation in Experimental Modal Analysis

Article Preview

Abstract:

The paper deals with mode separation process in experimental modal analysis. The main role in this process plays a technique known as Enhanced Frequency Response Function (EFRF), which allows separate the different modes of a structure. The results of the separation are responses of isolated systems with one degree of freedom by means of which complex poles can be estimated with greater accuracy. The paper describes the basic principle of EFRF technique and also presents its application in experimental modal analysis.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

91-94

Citation:

Online since:

February 2016

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2016 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] C. M. Harris, G. P. Allan, Harris' shock and vibration handbook, Fifth edition. McGraw-Hill, (2002).

Google Scholar

[2] D. J. Ewins, Modal Testing - Theory, practice and application. 2nd edition, Wiley, (2000).

Google Scholar

[3] F. Trebuňa, F. Šimčák, R. Huňady, Vibration and modal analysis of mechanical systems (in Slovak), TU v Košiciach, (2012).

Google Scholar

[4] R. J. Allemang, D. L. Brown, A Complete Review of the Complex Mode Indicator Function with Applications, in: Proceedings of International Conference on Noise and Vibration Engineering, ISMA, (2006).

Google Scholar

[5] S. J. Shelley, Investigation of Discrete Modal Filters for Structural Dynamics Applications, Doctoral Dissertation, University of Cincinnati, (1991).

Google Scholar

[6] W. Leurs, F. Deblauwe, F. Lembregts, Modal Parameter Estimation Based Upon Complex Mode Indicator Functions, in: Proceedings of IMCA XI, (1993).

Google Scholar