Shock and Vibration

Shock and Vibration / 2010 / Article
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International Conference on Structural Engineering Dynamics – ICEDyn 2009

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Volume 17 |Article ID 749679 | https://doi.org/10.3233/SAV-2010-0548

R.A.B. Almeida, A.P.V. Urgueira, N.M.M. Maia, "The Use of Transmissibility Properties to Estimate FRFs on Modified Structures", Shock and Vibration, vol. 17, Article ID 749679, 15 pages, 2010. https://doi.org/10.3233/SAV-2010-0548

The Use of Transmissibility Properties to Estimate FRFs on Modified Structures

Received18 Jun 2010
Accepted18 Jun 2010

Abstract

When deriving an experimental model from Frequency Response Functions (FRFs), it may happen that the measurement of certain FRFs is impossible. This may be an important issue, mainly in the field of condition monitoring and damage detection, since some points of interest may become inaccessible in operational conditions. In this circumstance, it is useful to have some tools that can provide the prediction of such dynamic information. The transmissibility concept, extended to a general multiple degree-of-freedom system, can play an important role to circumvent these situations. The authors have shown in previous works that the estimation of such FRFs can be made possible by invoking important properties associated with the transmissibility function. The objective of this work is to evaluate different sets of FRFs, estimated by using the transmissibility concept and its associated properties, in an actual continuous structure to which different patterns of structural modification are applied. A supplementary study in this work shows that some of the sets for applied forces/known responses can better estimate the FRF data.

Copyright © 2010 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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