Neural network-based aeroelastic system identification for predicting flutter of high flexibility wings

Qing Guo; Xiaoqiang Li; Zhijie Zhou; Dexiao Ma; Yuzhuo Wang

doi:10.1038/s41598-024-82573-7

Neural network-based aeroelastic system identification for predicting flutter of high flexibility wings

Sci Rep. 2025 Jan 3;15(1):623. doi: 10.1038/s41598-024-82573-7.

Authors

Qing Guo^{1

2}, Xiaoqiang Li³, Zhijie Zhou⁴, Dexiao Ma⁴, Yuzhuo Wang⁴

Affiliations

¹ School of Aeronautics, Northwestern Polytechnical University, Xi'an, 710072, China. gq@nwpu.edu.cn.
² National Key Laboratory of Aircraft Configuration Design, Xi'an, 710072, China. gq@nwpu.edu.cn.
³ School of Aeronautics, Northwestern Polytechnical University, Xi'an, 710072, China. lxq0223@mail.nwpu.edu.cn.
⁴ School of Aeronautics, Northwestern Polytechnical University, Xi'an, 710072, China.

Abstract

Flutter is an extremely significant academic topic in both aerodynamics and aircraft design. Since flutter can cause multiple types of phenomena including bifurcation, period doubling, and chaos, it becomes one of the most unpredictable instability phenomena. The complexity of modeling aeroelasticity of high flexibility wings will be substantially simplified by investigating the prospect of system identification techniques to forecast flutter velocity. Therefore, a novel neural network (NN)-based method for aeroelastic system identification is proposed. The proposed NN-based approach constructs an NN framework of high flexibility wings flutter models with different materials and sizes, which can effectively predict the flutter velocity of flexible wings. The accuracy of the method is demonstrated by comparing with the simulation results.

Keywords: Aeroelasticity; Flutter; High Flexibility wings; Neural network.