首页|Experimental,Numerical,and Analytical Studies on the Bending of Mechanically Lined Pipe
Experimental,Numerical,and Analytical Studies on the Bending of Mechanically Lined Pipe
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Mechanically lined pipe(MLP)is often used for offshore oil and gas transport because of its low cost and corrosion resistance.During installation and operation,the pipe may undergo severe bending deformation,which causes the liner to separate from the outer pipe and buckles,affecting the stability of the whole line.In this paper,the buckling response of MLP subjected to bending is investigated to clarify its bending characteristics by employing both experi-ments,numerical simulation,as theoretical methods.Two types of MLPs were manufactured with GB 45 carbon steel(SLP)and Al 6061(ALP)used as the outer pipe material,respectively.The hydraulic expansion and bending experiments of small-scale MLPs are conducted.In addition to the ovalized shape of the cross-section for the SLP specimens,the copper liner was found to wrinkle on the compressive side.In contrast,the liner of ALP remains intact without developing any wrinkling and collapse mode.In addition,a dedicated numerical framework and theo-retical models were also established.It was found both the manufacturing and bending responses of the MLP can be well reproduced,and the predicted maximum moment and critical curvatures are in good agreement with the experi-mental results.
lined pipebendingnonlinear ring theorybucklingplasticity
WEI Wen-bin、YUAN Lin、ZHOU Jia-sheng、LIU Zheng
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State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China
School of Civil Engineering,Tianjin University,Tianjin 300072,China
School of Mechanical Engineering,Tianjin University,Tianjin 300072,China
National Natural Science Foundation of ChinaPeiyang Scholar Initiation Fund from Tianjin University
NETL
NSTL
万方数据
维普
