哈尔滨工程大学学报2024，Vol.45Issue(1)：32-43,12.DOI:10.11990/jheu.202109045
含连续不均匀椭圆缺陷管道的屈曲失稳分析
An analysis on the buckling instability of a pipeline with continuous nonuniform oval defects
摘要
Abstract
To investigate the impact of axial continuous nonuniform residual defects on the buckling load-carrying capacity of the submarine pipelines subjected to external pressure,this paper employs numerical simulation methods to study the buckling instability behavior of the axial pipelines with uniform,single-and double-peak oval defects,adopts the RIKS method to calculate the buckling pressures of the pipelines.These results are compared with the results calculated using the DNV-OS-F101 norms.The research verifies the conservatism of DNV norms in predic-ting the buckling pressure of an axial pipeline with nonuniform oval defects and primarily analyzes the excitation po-sitions and the influence parameters of the buckling instability of axial pipelines with continuous nonuniform oval defects.The results show that the buckling pressure of the axial pipeline with continuous nonuniform oval defects is mainly determined via the uniform ovality and the maximum local ovality,and the variation laws of the buckling pressures are different within different ranges of defect spacing.In addition,the range of the rise and fall is affected by the coupling effect between the spacing of oval defects and the maximum ovality.关键词
深海/海底管道/椭圆缺陷/屈曲失稳/压溃/弧长法/有限元分析/数值模拟Key words
deep sea/submarine pipeline/oval defect/buckling instability/squash/riks method/finite element a-nalysis/numerical simulation分类
力学引用本文复制引用
谢鹏,陈昇琳,常江涛..含连续不均匀椭圆缺陷管道的屈曲失稳分析[J].哈尔滨工程大学学报,2024,45(1):32-43,12.基金项目
国家自然科学基金项目(52001337) （52001337）
广东省人才工程项目(2021TQ06H117) （2021TQ06H117）
珠海市产学研项目(ZH22017001210027PWC) （ZH22017001210027PWC）
广东省海洋经济高质量发展项目(GDNRC[2021]43). （GDNRC[2021]43）
