MODAL AND FLUTTER ANALYSES USING FINITE ELEMENT MODEL FOR AN AERODESIGN AIRPLANE WING

Mariana S. Assis¹; Roberto M. C. Neto¹; Leonardo C. Sicchieri¹; Thais F. Kazeoka¹; Leonardo Sanches¹; Thiago A. M. Guimarães¹; Aldemir A. C. Junior¹

¹ Federal University of Uberlandia

doi:10.20906/CPS/COB-2015-2076

Resumo

In the scope of dynamics aeroelasticity, flutter stability has an important role for determination of the critical design speeds in aeronautical projects. Indeed, such phenomenon has been currently found at SAE Brazil Aerodesign Competition, leading the aircraft to catastrophic failure. The present paper performs the aeroelastic analysis of an aerodesign aircraft wing with PKNL method, already implemented in NASTRAN solution package. Doublet Lattice was adopted for aerodynamic model and the post-processing program was developed in order to visualize the V-g-f diagram. The finite element model (FEM) was validated experimentally through static and dynamic tests.

Palavras-chave: aeroelasticity; experimental evaluation; NASTRAN; Doublet Lattice; p-k method; flutter; aerodesign