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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021

Autores

Myrella V. Cabral (Autor) Outra; Flávio D. Marques (Autor) Outra; António J. M. Ferreira (Autor) FEUP

Revista

Título: Thin-Walled Structures

Vol. 161

Páginas: 1-12

ISSN: 0263-8231

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 1 Citação

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12