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A structural dynamics model of a multi-segmented folding wing: Theory and experiment

Publication ,  Journal Article
Wang, I; Dowell, EH
Published in: Collection of Technical Papers AIAA ASME ASCE AHS ASC Structures Structural Dynamics and Materials Conference
December 1, 2011

This paper presents a general structural dynamics model based on beam theory that predicts the natural frequencies of a folding wing with an arbitrary number of wing segments. The structural model is derived from a modal analysis using work-energy principles - the energy expressions and constraint equations are derived from a kinematics analysis, and the equations of motion are derived using Lagrange's equations with Lagrange multipliers. The theoretical results are compared to experimental data for three different configurations: a 2-segment model, a 3-segment model, and a 4-segment model. The theoretical model accurately predicts the general behavior of natural frequencies versus fold angle for all three configurations, and the computed values are within 10% of the measured values for the majority of the modes. Copyright © 2011 by the American Institute of Aeronautics and Astronautics, Inc.

Duke Scholars

Published In

Collection of Technical Papers AIAA ASME ASCE AHS ASC Structures Structural Dynamics and Materials Conference

DOI

ISSN

0273-4508

Publication Date

December 1, 2011
 

Citation

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Wang, I., & Dowell, E. H. (2011). A structural dynamics model of a multi-segmented folding wing: Theory and experiment. Collection of Technical Papers AIAA ASME ASCE AHS ASC Structures Structural Dynamics and Materials Conference. https://doi.org/10.2514/6.2011-1871
Wang, I., and E. H. Dowell. “A structural dynamics model of a multi-segmented folding wing: Theory and experiment.” Collection of Technical Papers AIAA ASME ASCE AHS ASC Structures Structural Dynamics and Materials Conference, December 1, 2011. https://doi.org/10.2514/6.2011-1871.
Wang I, Dowell EH. A structural dynamics model of a multi-segmented folding wing: Theory and experiment. Collection of Technical Papers AIAA ASME ASCE AHS ASC Structures Structural Dynamics and Materials Conference. 2011 Dec 1;
Wang, I., and E. H. Dowell. “A structural dynamics model of a multi-segmented folding wing: Theory and experiment.” Collection of Technical Papers AIAA ASME ASCE AHS ASC Structures Structural Dynamics and Materials Conference, Dec. 2011. Scopus, doi:10.2514/6.2011-1871.
Wang I, Dowell EH. A structural dynamics model of a multi-segmented folding wing: Theory and experiment. Collection of Technical Papers AIAA ASME ASCE AHS ASC Structures Structural Dynamics and Materials Conference. 2011 Dec 1;

Published In

Collection of Technical Papers AIAA ASME ASCE AHS ASC Structures Structural Dynamics and Materials Conference

DOI

ISSN

0273-4508

Publication Date

December 1, 2011