ZHANG Huixin, YANG Deqing. Typical shape and topology optimization design of the ship grillage structure[J]. Chinese Journal of Ship Research, 2015, 10(6): 27-33,59. doi: 10.3969/j.issn.1673-3185.2015.06.005
Citation: ZHANG Huixin, YANG Deqing. Typical shape and topology optimization design of the ship grillage structure[J]. Chinese Journal of Ship Research, 2015, 10(6): 27-33,59. doi: 10.3969/j.issn.1673-3185.2015.06.005

Typical shape and topology optimization design of the ship grillage structure

doi: 10.3969/j.issn.1673-3185.2015.06.005
  • Received Date: 2015-03-30
  • Publish Date: 2015-11-20
    © 2015 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.
  • Taking the typical ship grillage structure as the study object, this paper mainly describes the ap-plication of optimized design of ship structures. Specifically, the size and shape optimization is applied onto the grillage structure at the bottom, with the weight of the structure being objective and the stress being the constraint condition. After optimization, the weight has decreased by 15.82%. As for deck grillage, to im-prove the spatial layout of the top of superstructure cabins, raise the natural frequency of grillage structure on top, and seek for the optimal distribution of materials, the topology optimization is applied with its static analysis and modal analysis being discussed. Based on the above obtained data, the volume fraction is set as the restriction condition of the model, and the structural natural frequency is set as the objective func-tion. Finally, new structure type which optimizes the spatial layout of the top of superstructure cabins are presented, which renders more reasonable material distribution, increases grillage structure's natural fre-quency, and meets expected goals. Research shows that, at present, the grillage structure design can be widely used in the topology and shape optimization design technology.
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