Gefferson C. Silva, Mauricio V. Donadon, Flavio J. Silvestre

DOI Number: N/A

Conference number: IFASD-2019-127

This work presents the development of a finite element beam model accounting for structural and aerodynamic nonlinearities regarding large deflections. The total Lagrangian formulation is employed for describing the exact Timoshenko’s bending kinematics, whereas the torsion is modeled as an uniform torsion and uncoupled from the bending motion. The aerodynamic description is based on an unsteady 2D strip theory in the time domain with the Jones approximation for Wagner’s function. In addition, a follower forces assumption combined with a simplified stall model are assumed, in which the lift-curve slope is interpolated based on the experimental data available in the literature. Very good correlation between experimental and predicted aeroelastic responses has been obtained for a highly elongated plate-like wing structure with a ballast at the free end.

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In Categories: IFASD 2019, Modeling for Design of Highly Flexible Aircraft
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