Nonlinear Modal Condensation of Large Finite Element Models: Application of Hodges’s Intrinsic Theory

What is it about?

Most aeroelastic structures are analysed, in an industrial environment, using linear methods. This can be however limiting when they become too flexible, as occurs in the blades of the latest offshore wind turbines or in the wings of very-long endurance aircraft. Here we present a computational strategy that takes the models and results used in a linear analysis and automatically constructs a nonlinear one that account for the geometric effects coming from the slenderness. This is examplified in an industrial-level aircraft model.

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