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An Equivalent Modeling Method for Honeycomb Sandwich Structure Based on Orthogonal Anisotropic Solid Element

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Abstract

An equivalent modeling method for honeycomb sandwich structure is presented in this paper. Honeycomb core is regarded as an interlayer and orthogonal anisotropic solid elements are used to model it, while the panels of honeycomb sandwich structure are represented by shell elements. This method not only controls model size and ensures computational efficiency, but also solves the problem that two-dimensional model cannot represent the internal stress distribution and local deformation. Based on the orthogonal anisotropy of honeycomb and the actual cellular size, 9 independent elastic parameters of the interlayer are given, so that the physical properties of the interlayer are described completely. In the example, the displacement errors under typical static loadcases are less than 3.12% and the frequency errors of the first six orders are less than 4.07%, compared with the precise model. A modal tapping test was carried out on a payload mounting panel with honeycomb sandwich structure. By comparing the test data with the analysis data of the equivalent model, it was shown that the frequency errors of the first six orders were all within 5%, and the analysis modes were consistent with the experimental fitting modes, which further verified the validity of the equivalent method.

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Funding

The National Key Research and Development Program of China (2016YFB0500904).

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Authors and Affiliations

  1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, Jilin, China

    Jian Yuan & Lei Zhang

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Jian Yuan

  3. Chang Guang Satellite Technology Co., LTD, Changchun, 130033, Jilin, China

    Lei Zhang & Zhanwei Huo

Authors
  1. Jian Yuan
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  2. Lei Zhang
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  3. Zhanwei Huo
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Correspondence to Lei Zhang.

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Yuan, J., Zhang, L. & Huo, Z. An Equivalent Modeling Method for Honeycomb Sandwich Structure Based on Orthogonal Anisotropic Solid Element. Int. J. Aeronaut. Space Sci. 21, 957–969 (2020). https://doi.org/10.1007/s42405-020-00259-6

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  • DOI: https://doi.org/10.1007/s42405-020-00259-6

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