| 含点蚀损伤船体加筋板在纵向压力下的极限强度 |
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| 引用本文： | 胡康,杨平,杜晶晶,彭子牙.含点蚀损伤船体加筋板在纵向压力下的极限强度[J].船舶工程,2018,40(7):88-94. |
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| 作者姓名： | 胡康 杨平 杜晶晶 彭子牙 |
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| 作者单位： | 武汉理工大学交通学院,武汉,430063;武汉理工大学交通学院,武汉430063;高性能船舶技术教育部重点实验室(武汉理工大学),武汉430063 |
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| 基金项目： | 国家自然科学基金项目资助（51779198） |
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| 摘 要： | 针对老龄化船舶结构上的点状腐蚀,利用非线性有限元方法进行计算,分析304个船体加筋板的极限强度,探讨带板柔度、加强筋柔度、腐蚀面积比和腐蚀深度比对纵向压力下含点蚀损伤船体加筋板极限强度的影响,拟合出点状腐蚀下船体加筋板极限强度折减公式并对其适用性进行验证,研究结果具有一定的工程参考意义和价值。
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| 关 键 词： | 点状腐蚀 极限强度 非线性有限元 加筋板 拟合公式 |
| 收稿时间： | 2017/12/19 0:00:00 |
| 修稿时间： | 2018/8/9 0:00:00 |
Ultimate Strength Research on Stiffened Plates with Pitting Corrosions under Longitudinal Compression |
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| Abstract: | Pitting corrosion wastage always happened in the ship structures and is one of the main factors leading to the failure of aging ship structures. This paper focuses on the pitting corrosions on aging ship structures, and nonlinear finite element analyzes are carried out for the ultimate strength of 304 stiffened plates. The influences of plate slenderness, column slenderness, corrosion area ratio and corrosion depth ratio on ultimate strength of stiffened plates with pitting corrosions under longitudinal compression are studied. Reduction formula is derived to predict ultimate strength of stiffened plates with pitting corrosions and its applicability is verified, which have certain practical engineering significance and value. |
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| Keywords: | pitting corrosions ultimate strength nonlinear finite element stiffened plates fitting formula |
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