This study aims to assess the vibrational behavior of a large transport airship based on finite element (FE) simulation and modal testing of its scaled model.

    Design/methodology/approach

    A full-size parametric FE model of the airframe was established according to the structural layout of the composite beam-cable airframe of the airship, and vibrational analysis of the airframe was conducted. The influence of cable pre-tension load on the inherent properties of the airframe was investigated. Based on the simplification of the full-size FE model, scaled numerical and test models of the airframe, with a geometric scale factor of 1:50, were established and built.

    Findings

    The simulation and test results of the scaled models indicated that the mode shapes of the full-size and scaled models were similar. The natural frequencies of both the full-size and scaled models complied with the theoretical similarity relation of the frequency response.

    Originality/value

    This study demonstrated that the vibrational test results of the scaled model with very large scaling can be used to characterize the modal properties of the beam-cable airframe of a large transport airship.


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    Title :

    Characterizing vibrational behavior of a large airship based on scaled model test and analysis


    Contributors:
    Xu, Mingxuan (author) / Jin, Tao (author) / Kong, Weihong (author) / Li, Yazhi (author) / Shen, Xing (author) / Liu, Cheng (author) / Zhu, Tianyang (author)

    Published in:

    Publication date :

    2022-11-24


    Size :

    16 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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