Ground Vibration Testing of a Flexible Wing: A Benchmark and Case Study

Dessena, Gabriele and Ignatyev, Dmitry I. and Whidborne, James F. and Pontillo, Alessandro and Zanotti Fragonara, Luca (2022) Ground Vibration Testing of a Flexible Wing: A Benchmark and Case Study. Aerospace, 9 (8). p. 438. ISSN 2226-4310

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Abstract

Beam-like flexible structures are of interest in many fields of engineering, particularly aeronautics, where wings are frequently modelled and represented as such. Experimental modal analysis is commonly used to characterise the wing’s dynamical response. However, unlike other flexible structure applications, no benchmark problems involving high-aspect-ratio flexible wings have appeared in the open literature. To address this, this paper reports on ground vibration testing results for a flexible wing and its sub-assembly and parts. The experimental data can be used as a benchmark and are available to the aeronautical and structural dynamics community. Furthermore, non-linearities in the structure, where present, were detected. Tests were performed on the whole wing as well as parts and sub-assembly, providing four specimens. These were excited with random vibration at three different amplitudes from a shaker table. The modal properties of a very flexible high-aspect-ratio wing model, its sub-assembly and parts, were extracted, non-linear behaviour was detected and the experimental data are shared in an open repository.

Item Type: Article
Subjects: GO for STM > Engineering
Depositing User: Unnamed user with email support@goforstm.com
Date Deposited: 10 Apr 2023 06:09
Last Modified: 18 Sep 2023 09:59
URI: http://archive.article4submit.com/id/eprint/530

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