Nonlinear Static Aeroelasticity of High Aspect Ratio Wing Aircraft by FEM and Multibody Methods

Michele Castellani, Jonathan E. Cooper, Yves Lemmens

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Two procedures for the nonlinear static aeroelastic analysis of high aspect ratio wing aircraft subject to geometric nonlinearities are developed. The two approaches are based on the nonlinear Finite Element Method and on multibody dynamics and employ a linear aerodynamic formulation, respectively Doublet Lattice Method and strip theory. Static aeroelastic results in terms of wing integrated loads at various trim conditions for a very flexible aircraft testcase are presented and compared to the linear ones. Significant differences are found between a linear and a nonlinear approach and attention is drawn to the importance of the follower force effects of the aerodynamics and of considering large displacements and rotations, identified as the main sources of the discrepancies, for the static flight loads computation and subsequent structural sizing of the wing.
Original languageEnglish
Title of host publication15th Dynamics Specialists Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages22
ISBN (Electronic)9781624103988
ISBN (Print)9781624103988
Publication statusPublished - 4 Jan 2016
Event15th Dynamics Specialists Conference, 2016 - San Diego, United States
Duration: 4 Jan 20168 Jan 2016


Conference15th Dynamics Specialists Conference, 2016
CountryUnited States
CitySan Diego

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