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Upheaval buckling of subsea pipeline

Two analysis procedures are proposed which simulate the embedded process and upheaval buckling of pipelines. A static method is used in the first procedure and dynamic method is used in the second procedure uses. Four finite element models of pipelines are established by ABAQUS including 2D static model, 2D dynamic model, 3D static model and 3D dynamic model.

 

Two typical upheaval buckling phenomena (snap buckling and bifurcation buckling) of imperfect pipelines are discussed in details.

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