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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/121624


    Title: Flutter speed prediction by using deep learning
    Authors: Wang, Yi-Ren;Wang, Yi-Jyun
    Keywords: Flutter analysis;deep learning;deep neural network;long short-term memory
    Date: 2021-11-18
    Issue Date: 2021-11-19 12:10:20 (UTC+8)
    Publisher: SAGE Journals
    Abstract: Deep learning technology has been widely used in various field in recent years. This study intends to use deep learning algorithms to analyze the aeroelastic phenomenon and compare the differences between Deep Neural Network (DNN) and Long Short-term Memory (LSTM) applied on the flutter speed prediction. In this present work, DNN and LSTM are used to address complex aeroelastic systems by superimposing multi-layer Artificial Neural Network. Under such an architecture, the neurons in neural network can extract features from various flight data. Instead of time-consuming high-fidelity computational fluid dynamics (CFD) method, this study uses the K method to build the aeroelastic flutter speed big data for different flight conditions. The flutter speeds for various flight conditions are predicted by the deep learning methods and verified by the K method. The detailed physical meaning of aerodynamics and aeroelasticity of the prediction results are studied. The LSTM model has a cyclic architecture, which enables it to store information and update it with the latest information at the same time. Although the training of the model is more time-consuming than DNN, this method can increase the memory space. The results of this work show that the LSTM model established in this study can provide more accurate flutter speed prediction than the DNN algorithm.
    Relation: Advances in Mechanical Engineering 13(11)
    DOI: 10.1177/16878140211062275
    Appears in Collections:[航空太空工程學系暨研究所] 期刊論文

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