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Abstract
The two-dimensional problem of standing wave impact on an underwater gas pipeline is discussed. The pipeline is placed in a trench filled with liquefied soil. The unsteady problem of the motion of heavy fluid is solved using the finite element method and the Lagrangian approach. A rheological model of dry friction represents pipe-to-soil adhesion. It is shown that the frame (liquefied soil) rigidity parameters and a dry friction force influence the pipeline oscillations.
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