Abstract

MASSEY, D.S.  and  CONSTANCON, C.P.. Structural modification using frequency response functions: an experimental study. R&D j. (Matieland, Online) [online]. 1993, vol.9, pp.8-13. ISSN 2309-8988.

The technique of Structural Modifications Using Frequency Response Functions, or SMURF, was studied. The technique was employed for the prediction of the modified dynamic characteristics of beam-like structures, with experimentally derived FRFs serving as a basis. Pinned and rigid modification types were employed, which made it necessary to consider FRFs which related rotational excitation and response. Consequently an accelerometer capable of measuring rotational acceleration was utilised in the study. The results indicated that the SMURF technique was able to predict the dynamic characteristics of the modified structures with a high degree of accuracy. It was however found that the accuracy of the predictions diminished where noise was present in the component structures' FRFs.

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