Elisabetta Conti, Francesco Saltari, Marco Eugeni, Valerio Camerini, Giuliano Coppotelli

DOI Number: N/A

Conference number: IFASD-2017-046

In this paper an approach for the identification of the modal properties of a timevarying system in the Operational Modal Analysis (OMA) framework is presented. The natural frequencies are estimated using the Hilbert-Huang Transform Method (HHTM) for its capabilities to track the time variations of such modal properties. Then, the Hilbert Transform Method (HTM) is applied for estimating both the damping ratios and mode shapes, not available from the previous method. The developed approach has been numerically assessed considering an aeroelastic system. The accuracy in time-tracking the modal parameters has been investigated by analyzing the numerically simulated time responses from a panel flutter model subjected to random operating loading for which the analytical solution is available.

Read the full paper here

In Categories: 1.Events, Environmental dynamics and aeroelasticity, IFASD 2017
Email
Print
LinkedIn
The paper above was part of  proceedings of a CEAS event and as such the author has signed a publication agreement to have their paper published in the repository. In the case this paper is found somewhere else CEAS always links to the other source.  CEAS takes great care in making the correct content available to the reader. If any mistakes are found  in the listings please contact us directly at papers@aerospacerepository.org and we will correct the listing promptly.  CEAS cannot be held liable either for mistakes in editorial or technical aspects, nor for omissions, nor for the correctness of the content. In particular, CEAS does not guarantee completeness or correctness of information contained in external websites which can be accessed via links from CEAS’s websites. Despite accurate research on the content of such linked external websites, CEAS cannot be held liable for their content. Only the content providers of such external sites are liable for their content. Should you notice any mistake in technical or editorial aspects of the CEAS site, please do not hesitate to inform us.