Nonlinear aeroelastic analysis of high-aspect-ratio wings in low subsonic flow

In this study, aeroelastic characteristics of high-aspect-ratio wing models with structural nonlinearities in quasi-steady aerodynamics flows are investigated. The studied wing model is a cantilever wing with double bending and torsional vibrations and with large deflection ability in accordance with Hodges–Dowell wing model. This wing model is valid for long, straight and thin homogeneous isotropic beams. The aerodynamics model is based on quasi-steady aerodynamic which is valid for aerodynamic flows without wake, viscosity and compressibility effects. The effect of different parameters such as mass ratios and stiffness ratios on flutter and divergence velocities and limit cycle oscillation amplitudes are carefully studied.

► Behaviors of high-aspect-ratio wing models in quasi-steady aerodynamic flow are investigated. ► The wing model is modeled as Hodges–Dowell wing model with double bending and torsion vibrations. ► The effect of mass and stiffness ratios on flutter and divergence velocities are carefully studied. ► Limit cycle oscillation of high-aspect-ratio wing with different structural properties are studied.