Dynamic analysis of a steel floating pipeline on sea

A dynamic analysis of a kind of steel pipeline is presented in this paper. With a reasonable simplification of the working conditions, the finite element model of the pipeline is built. To get the optimal span, the dynamic displacement and internal force of the pipeline are calculated with ANSYS, considering the function of inertia and damp. Under the optimal span, a frequency response analysis is carried out, proving that resonance does not happen between the pipe and wave. Transient analysis of the pipeline is carried out with the Newmark's β theorem. The results show that the optimal span of the pipeline cannot be larger than the foregoing choice.