What is it about?
This works shows how a modal nonlinear solution can be coupled to a CFD code to enable aeroelastic analyses involving large displacements.
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Why is it important?
Nonlinear modal solutions are not popular yet, but they present a great potential to increase the accuracy of analyses involving large displacements. Wings undergoing tip displacements higher than 20% of the semi-span can be quickly analyzed with this methodology. This paper shows that this methodology can be coupled to CFD solvers in order to have high-fidelity aeroelatic solutions considering the nonlinear structural features.
Perspectives
This is the first AIAA publication involving this particular methodology of nonlinear modal solutions. My hope is that this publication can increase the awareness of the aeroelastic analysis community to the potential of this approach. In fact, while nonlinear finite element (FE) dynamic analyses are very costly, this method can reduce a wing to less than 20 degrees-of-freedom and lead to solutions obtained in seconds, instead of the many hours required for FE solutions.
Renato Medeiros
University of Michigan
Read the Original
This page is a summary of: Nonlinear Computational Aeroelasticity Using Structural Modal Coordinates, January 2018, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2018-1447.
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