TITLE

Imposing Node on Harmonically Excited Structures via FRF Measurements

AUTHOR(S)
Nematipoor, N.; Ashory, M. R.; Jamshidi, E.
PUB. DATE
September 2011
SOURCE
International Review of Mechanical Engineering;Sep2011, Vol. 5 Issue 6, p1076
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Vibration absorbers are usually designed using the Finite Element (FE) model of structures. It is generally believed that the modal models are more accurate than FE models, because in modal testing the model is built by direct measurement of the test structure. In this paper, a method is proposed to design a translational vibration absorber using the measured Frequency Response Functions (FRFs) of a primary structure. The designed vibration absorber imposes a node on the structure when it is excited by a harmonic force. The method is based on the Structural Modification Using experimental frequency Response Functions (SMURF) technique. Moreover, a procedure is developed to suppress the vibration amplitude on a linear structure subjected to harmonic excitations by attaching sprung mass absorber. The numerical and experimental results show that the designed absorber is effective and suppresses the amplitude of vibration considerably.
ACCESSION #
76109714

 

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