Floating wind turbine and next-generation aircraft have high-aspect-ratio blade and wing that undergo nonlinear aeroelastic deformation. We have developed a nonlinear aeroelastic analysis framework with absolute nodal coordinate formulation (ANCF). This nonlinear aeroelastic deformation is coupled with multibody dynamics. We are also developing a novel analysis framework for this coupling dynamics.

By using the nonlinear analysis method proposed in this study, it is possible to handle the reduction in flutter speed due to large deformations and the coupled phenomenon of deformation and flight behavior that cannot be captured using conventional linear analysis methods.

• Straightforward nonlinear structural analysis method that does not use any rotational coordinates
• Highly efficient unsteady fluid calculation method for large deformations
• Multibody dynamics that captures the relative motion between bodies, such as rotating blades and control surfaces

Dynamic, aeroelastic, structural, vibration, aerodynamic analyses for Aeroelastic Multibody Systems:
1. Floating wind turbine
2. High altitude platform station (HAPS), high-aspect-ratio-wing commercial jet
3. Helicopter, drone
4. Robot, crane

• Wind Turbine
• Aircraft
• Aeroelasticity
• Multibody Dynamics
• Robot