Fluid-structure interaction on a thin panel including shock impingement effects

Kirk R. Brouwer, Ricardo A. Perez, Timothy J. Beberniss, S. Michael Spottswood, David A. Ehrhardt

Research output: Chapter in Book/Report/Conference proceedingConference contribution


An experimental methodology was designed to explore the aeroelastic response of a thin, buckled panel to turbulent flows with and without a shock/boundary layer interaction (SBLI). The approach combines a systematic testing strategy with state-of-the-art full-field, non-contact measurement techniques. Measured time histories of the full-field displacement from threedimensional digital image correlation (DIC) and the panel velocity showed multiple instances of co-existing, nonlinear panel responses. Periodic and chaotic post-flutter oscillations with and without SBLI were captured. Aeroelastic simulations of the thin panel were also evaluated relative to the experimental data. The fully coupled simulation framework relies on the quasi-steady enriched piston theory model for the mean aerodynamic pressure coupled with a nonlinear structural reduced-order model. The system’s sensitivity to the cavity pressure as well as temperature differential between the frame and panelwere investigated. The simulations reasonably predicted the onset and frequency content of the post-flutter response for a range of conditions, albeit with an increase in the oscillationamplitude. Chaotic and periodic oscillations occurred for the buckled panel in the absence of SBLI. The panel behavior transitioned to periodic when an attached SBLI was introduced over the surface, with a majority of the oscillations centered about the three-quarter chord.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2021 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Number of pages22
ISBN (Print)9781624106095
StatePublished - 2021
Externally publishedYes
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021 - Virtual, Online
Duration: Jan 11 2021Jan 15 2021

Publication series

NameAIAA Scitech 2021 Forum


ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
CityVirtual, Online

ASJC Scopus subject areas

  • Aerospace Engineering


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