管(容器)
缩进
材料科学
半径
有限元法
结构工程
变形(气象学)
显著性差异
复合材料
内芯
工程类
计算机科学
数学
统计
计算机安全
作者
Xianming Liu,Chuanxi Zhou,Feng Wan,Haifeng Tian,Weihua Chen,Feng Guan
标识
DOI:10.1016/j.oceaneng.2023.113726
摘要
It is crucial to reveal the dent deformation mechanism of the sandwich pipe (SP) for the dent evaluation of damaged offshore SPs. This study aimed to explore the difference in dent characteristics between sandwich pipes' inner and outer tubes subjected to lateral loads. Quasi-static lateral denting tests are carried out to investigate the denting resistance and the indentation characteristics of SPs with the ends fixed. The finite element method is used to simulate the development of SP dent in the installation, operation, and shutdown stages. The dent depth and dent strain of the inner and outer tubes are examined and compared. Parametric studies are performed to clarify the influence of material properties, geometric configuration, and interlayer friction on the difference in dent characteristics between the inner and outer tubes. The research demonstrates that the relative difference in dent characteristics between the inner tube and the outer tube is closely related to the hollow ratio, thickness-to-radius ratio, material steel grade of the inner tube and the outer tube, and the interaction between the layers. The findings show that the current dent evaluation criteria need to be improved to provide practical dent evaluation for the dented SPs.
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