Research on Birdcage Buckling in the Armor Wire of A Damaged Umbilical Cable Under Compression and Bending Cyclic Load  

作　　者：CHEN Si-yuan DENG Yu LIANG Xu DENG Xue-jiao WANG Zhen-kui 

机构地区：[1]Ocean College,Zhejiang University,Zhoushan 316021,China [2]Marine Design&Research Institute of China,Shanghai 200023,China [3]Ningbo Orient Wires&Cable Co.LTD,Ningbo 315101,China

出　　处：《China Ocean Engineering》2025年第1期86-99,共14页中国海洋工程(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.52471301);the Fujian Province Transportation Science and Technology Project(Grant No.JC202302);the Zhejiang Provincial Natural Science Foundation of China(Grant No.LY24E090003).

摘　　要：Buckling failure in submarine cables presents a prevalent challenge in ocean engineering.This work aims to explore the buckling behavior of umbilical cables with damaged sheaths subjected to compression and bending cyclic loads.A finite element model is devised,incorporating a singular armor wire,a rigid core,and a damaged sheath.To scrutinize the buckling progression and corresponding deformation,axial compression and bending cyclic loads are introduced.The observations reveal that a reduction in axial compression results in a larger number of cycles before buckling ensues and progressively shifts the buckling position toward the extrados and fixed end.Decreasing the bending radius precipitates a reduction in the buckling cycle number and minimizes the deformation in the armor wire.Furthermore,an empirical model is presented to predict the occurrence of birdcage buckling,providing a means to anticipate buckling events and to estimate the requisite number of cycles leading to buckling.

关 键 词：umbilical cable armor wire birdcage buckling bending cycle damaged sheath 

分 类 号：O34[理学—固体力学]