荆腾, 吴梵, 张二, 张宇晨. 环壳过渡对潜艇锥-锥连接结构强度和稳定性的影响[J]. 中国舰船研究, 2020, 15(3): 111-116, 122. DOI: 10.19693/j.issn.1673-3185.01600
引用本文: 荆腾, 吴梵, 张二, 张宇晨. 环壳过渡对潜艇锥-锥连接结构强度和稳定性的影响[J]. 中国舰船研究, 2020, 15(3): 111-116, 122. DOI: 10.19693/j.issn.1673-3185.01600
JING Teng, WU Fan, ZHANG Er, ZHANG Yuchen. Effects of toroidal transition on strength and stability of submarine's cone-cone connection structure[J]. Chinese Journal of Ship Research, 2020, 15(3): 111-116, 122. DOI: 10.19693/j.issn.1673-3185.01600
Citation: JING Teng, WU Fan, ZHANG Er, ZHANG Yuchen. Effects of toroidal transition on strength and stability of submarine's cone-cone connection structure[J]. Chinese Journal of Ship Research, 2020, 15(3): 111-116, 122. DOI: 10.19693/j.issn.1673-3185.01600

环壳过渡对潜艇锥-锥连接结构强度和稳定性的影响

Effects of toroidal transition on strength and stability of submarine's cone-cone connection structure

  • 摘要:
      目的  为解决潜艇耐压结构中两个不同锥角的圆锥壳结合处的应力集中问题,提出一种锥-环-锥新型结构形式,并探讨该连接结构的影响、锥-环-锥结构的可行性和适用的锥角范围。
      方法  运用ANSYS有限元软件建立系列不同锥角的加肋锥-环-锥与锥-锥结构模型,以得到上述2种不同锥角的结构过渡段的典型应力、舱段弹性稳定性情况。通过对比分析,得出环壳过渡对不同锥角下的锥-锥结构力学性能的影响规律。
      结果  结果表明,左、右锥壳锥角差值越大,通过环壳降低峰值应力的作用更大,当两侧锥角差值大小γ1-γ2 < 10°时,使用环壳过渡的作用较小;半径较大一侧锥角较小时,锥-环-锥与锥-锥结构的失稳发生在过渡段半径较小一侧的锥壳,而锥-环-锥结构的稳定性优于锥-锥结构;半径较大一侧锥角较大时,结构失稳发生在半径较大的锥壳,且锥-环-锥结构的稳定性与锥-锥结构一致。
      结论  研究结果可为锥-锥连接结构的设计及物理试验提供参考。

     

    Abstract:
      Objectives  The cone-toroid-cone structure is a new type of structure to solve the problem of stress concentration at the joint of two conical shells with different angles in a pressure hull of submarine. The pupose of this paper is to discuss the effects of the cone-cone shell transition on its connection structure, as well as the feasibility of the cone-toroid-cone structure and applicable range of conical angle.
      Methods  A series of ring-stittened cone-toroid-cone and cone-cone structural model are established using ANSYS finite element method. The typical stress and elastic stability of the two above mentioned transition sections at different cone angles are obtained using the models. Through comparative analysis, the influence of the toroidal transition on the mechanical properties of cone-cone structures with different angles is obtained.
      Results  The results show that the greater the difference in conical angle between the left and right conical shells, the greater the effect of reducing peak stress using toroidal shells. When the conical angle different on both sides (γ1-γ2 < 10°) is satisfied, the significance of using an toroidal shell transition is smaller. When the conical angle is small, the instability of the two structures occurs in conical shells with a smaller transition section radius, and the stability of the cone-toroid-cone structure is better than that of the cone-cone structure. Structural instability occurs in conical shells with a larger radius. The stability of the cone-toroid-cone structure is consistent with that of the cone-cone structure.
      Conclusions  The research results can provide references for the design and physical experiment of cone-cone connection structures.

     

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