期刊
COMPOSITE STRUCTURES
卷 295, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2022.115828
关键词
Ceramic; Cylindrical shell; Hydrostatic test; Failure behavior; Ultimate strength
资金
- National Natural Science Foundation of China [12002107]
- National Postdoctoral Program for the Innovative Talents [BX20190101]
- China Postdoctoral Science Foundation [2019M661268]
- Heilongjiang Postdoctoral Financial Assistance [LBH-Z19061]
This study systematically investigates the failure behaviors and ultimate strength of ceramic cylindrical shells under hydrostatic pressure. The results show that increasing the thick-radius ratio or decreasing the length-radius ratio can effectively improve the structural tolerance pressure, and the conversion of failure modes is revealed by changing the geometrical parameters. This work provides engineering guidance for underwater pressure-resistant structural design.
Due to the ceramic with high compressive strength and superior corrosion resistance, using ceramic as the parent material of underwater pressure shell is a reliable choice. The failure behaviors and ultimate strength of the 99% alumina ceramic cylindrical shells with sealed ends under the hydrostatic pressure are systematically investi-gated by means of theoretical, experimental and numerical methods. The theoretical prediction of two possible failure modes, including both the circumferential buckling and strength failure, of the cylindrical shell is firstly made. Then, the hydrostatic tests are carried out for the ceramic cylindrical shell specimens with a constant thickness-radius ratio (t/R = 0.07) and different length-radius ratios (L/R = 3, 4, 5, 6), and the ultimate pressures of the corresponding specimens are acquired. Good agreement among the theoretical, numerical and experi-mental results has been obtained. Moreover, the results show that the structural tolerance pressure can be effectively improved by increasing the thick-radius ratio or decreasing the length-radius ratio. Meanwhile, the conversion of two possible failure modes of the 99% alumina ceramic has been clearly revealed through changing the geometrical parameters of the cylindrical shell. This work provides the engineering guidance for the un-derwater pressure-resistant structural design.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据