Volume 17 Issue 1
Mar.  2022
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LI S, WANG Z Q, YIN H. Influence of allowable stress on structural design of ring-stiffened cylindrical shells[J]. Chinese Journal of Ship Research, 2022, 17(1): 126–131 doi: 10.19693/j.issn.1673-3185.02239
Citation: LI S, WANG Z Q, YIN H. Influence of allowable stress on structural design of ring-stiffened cylindrical shells[J]. Chinese Journal of Ship Research, 2022, 17(1): 126–131 doi: 10.19693/j.issn.1673-3185.02239

Influence of allowable stress on structural design of ring-stiffened cylindrical shells

doi: 10.19693/j.issn.1673-3185.02239
  • Received Date: 2020-12-24
  • Accepted Date: 2021-12-29
  • Rev Recd Date: 2021-03-10
  • Available Online: 2022-02-26
  • Publish Date: 2022-03-02
    © 2022 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.
  •   Objective  This paper aims to study the influences of different allowable stresses of ribs in cylindrical shell design.  Methods  To this end, this paper uses full factorial experimental design and information entropy method to establish a multi-objective optimization model of ring-stiffened cylindrical shells based on the weighted-sum method, then uses the tolerance ranking method to optimize the solution of the model. Through changing the safety factor of allowable stress of ribs, the influences of them on the uniformity of the attributes of the cylindrical shell are analyzed.   Results  The results show that the rib stress is the main constraint in design. When the safety factor of the allowable stress of ribs is 0.675, the margins of each attribute value are more uniform at about 15%, and the structural weight is relatively small at this time.   Conclusions  Therefore, properly extending the allowable stress can solve the problem being the main constraint in structural design, and make the margins of each attribute value of the optimal solution more uniform.
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