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Wang Wei, Zhu Shiyang, He Weiping. Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects[J]. Chinese Journal of Ship Research, 2019, 14(4): 40-46. DOI: 10.19693/j.issn.1673-3185.01355
Citation: Wang Wei, Zhu Shiyang, He Weiping. Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects[J]. Chinese Journal of Ship Research, 2019, 14(4): 40-46. DOI: 10.19693/j.issn.1673-3185.01355
shu

Analysis on external pressure bearing capacity of cylindrical shell based on measured geometric defects

  • 1.

    Naval Military Representative Office in Huludao Area, Huludao 125004, China

  • 2.

    Wuhan Second Ship Design and Research Institute, Wuhan 430205, China

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  • Received Date: July 15, 2018
  • Available Online: May 07, 2021
© 2019 The Authors. Published by Editorial Office of Chinese Journal of Ship Research. Creative Commons License
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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    • Abstract
  •   Objectives  The purpose of this paper is to study the way to establish finite element models with real geometric defects, and to predict and analyze the bearing capacity of a scale down pressureresisting cylindrical shell structure based on different types of defects.
      Methods  Therefore, a geometric defect extraction method based on quadratic transformation is proposed, then the method of introducing the measured initial geometric defect, which is expressed by double Fourier series, is established. Finally, the buckling capacity of scale down pressure-resisting cylindrical shell under external pressure is analyzed and obtained based on eigenvalue modal defect and measured defect.
      Results  The results indicate that Fourier series method only involves traversing of grid nodes and calculation of a few function values and can significantly improve the calculation efficiency of defect introduction without reducing the accuracy of calculation.
      Conclusions  Fourier series method can provide guidance for accurate analysis of ultimate bearing capacity of cylindrical shell structure and structural optimization design.
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    • References (10)
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