The effect of curvature in nonlinear supersonic flutter of panels with adjacent bays

• Type: Article in International Scientific Journal
• Date: 2021

Authors

Myrella V. Cabral (Author) Other; Flávio D. Marques (Author) Other; António J. M. Ferreira (Author) FEUP

Journal

Title: Thin-Walled Structures

Vol. 161

Pages: 1-12

ISSN: 0263-8231

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 1 Citation

Other information

Authenticus ID: P-00T-A1V

DOI: 10.1016/j.tws.2020.107379

Abstract (EN): Structural skins of aerospace vehicles are typically made of large, internally reinforced curved panels. The presence of stiffening components subdivides the panel into several bays that interact structurally. In this context, the present study investigates the effects of adjacent bays interaction in curved panels under supersonic flutter. The analyses reveal severe jumps in the post-flutter LCO amplitudes and sub-critical bifurcation with the coexistence of different LCO branches for a specific range of dynamic pressure. These discontinuities consist of abrupt changes in the LCO amplitudes, directly related to the nonlinear coupling between adjacent bays under supersonic flutter with strong sensitivity to initial conditions.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12