Bending Failure Mode and Prediction Method of the Compressive Strain Capacity of A Submarine Pipeline with Dent Defects
作者机构：School of Mechanical and Transportation EngineeringChina University of PetroleumBeijingBeijing 102249China CNOOC Research Institute Ltd.Beijing 100028China
出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)
年 卷 期：2024年第38卷第4期
页 面：636-647页
核心收录：
学科分类：081505[工学-港口、海岸及近海工程] 08[工学] 081402[工学-结构工程] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0814[工学-土木工程] 082401[工学-船舶与海洋结构物设计制造]
基 金：financially supported by the National Natural Science Foundation of China(Grant No.52171285)
主 题：submarine pipeline dent defect bending load local buckling compressive strain capacity
摘 要：A dent is a common type of defects for submarine *** submarine pipelines,high hydrostatic pressure and internal pressure are the main *** pipelines bend due to complex subsea conditions,the compression strain capacity may be *** into the local buckling failure and accurate prediction of the compressive strain capacity are important.A finite element model of a pipeline with a dent is *** buckling failure under a bending moment is investigated,and the compressive strain capacity is *** effects of different parameters on pipeline local buckling are *** results show that the dent depth,external pressure and internal pressure lead to different local buckling failure modes of the pipeline.A higher internal pressure indicates a larger compressive strain capacity,and the opposite is true for external *** the ratio of external pressure to collapse pressure of intact pipeline is greater than 0.1,the deeper the dent,the greater the compressive strain capacity of the *** as the ratio is less than 0.1,the opposite is *** the basis of these results,a regression equation for predicting the compressive strain capacity of a dented submarine pipeline is proposed,which can be referred to during the integrity assessment of a submarine pipeline.
维普期刊数据库
同方期刊数据库