| 张洪彬,徐会希.球柱壳耐压舱体极限承载力研究[J].海洋工程,2022,40(2):154~161 |
| 球柱壳耐压舱体极限承载力研究 |
| Research on the ultimate strength of spherical shell cover plus cylindrical shell pressure hulls |
| 投稿时间：2021-03-24 |
| DOI：10.16483/j.issn.1005-9865.2022.02.015 |
| 中文关键词: 水下机器人 极限承载力 0.23%初始缺陷导入尺度 球柱壳耐压舱体 非线性屈曲 |
| 英文关键词:underwater vehicles ultimate bearing capacity 0.23% initial defect introduction scale spherical shell cover plus cylindrical shell pressure hulls nonlinear buckling |
| 基金项目:中国科学院A类战略性先导科技专项(XDA22040103)；国家重点研发计划资助项目(2011AA09A102) |
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| 中文摘要: |
| 耐压舱设计是水下机器人的核心技术之一，其极限承载力研究是核心中的核心。针对球壳封盖加柱形壳体耐压舱，现行标准对于初始导入缺陷数值的确定往往过于保守，对于耐压舱体数量较多的无人潜水器来说，过大的设计质量是总体设计所无法接受的。首先采用装配体整体建模策略，建立复合屈曲的受力模型，将三大非线性影响因素同时引入到极限承载力研究中，提升了计算精度。然后分别针对确定性缺陷和非确定性缺陷结构开展极限承载力研究。最后，提出以0.23%的初始缺陷导入尺度作为球壳封盖加圆柱壳体的耐压壳体缺陷导入参数，给出了导入尺度的计算方法，并借助水压试验对上述参数的准确性进行验证。 |
| 英文摘要: |
| The pressure hulls design is one of the core technologies of underwater vehicles, and its ultimate strength analysis is the core of the core. For the spherical shell cover and the cylindrical shell pressure hulls, the current standard is often too conservative for the initial introduction defect value. For the unmanned submersible with a large number of pressure hulls, the excessive design weight is the overall unacceptable design. In this research, the overall modeling strategy of the assembly is used to establish the force model of the composite buckling, and the three nonlinear influencing factors are simultaneously introduced into the strength analysis, which improves the calculation accuracy. The ultimate strength analysis study is then carried out for deterministic and non-deterministic defect structures, respectively. Finally, the defect introduction index of 0.23% initial defect introduction scale is adopted as the pressure hull of the spherical shell cover and the cylindrical shell, and the calculation method of the introduction scale is given, and the above parameters are accurately determined by the pressure test. |
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