The non-linear dynamic response interaction of a pipeline on a non-stationary ocean-bed is herein investigated where the pipeline is idealized as a beam on a non-linear elastic foundation. By employing regular perturbation and integral transform approach, this paper presents generalized closed form expressions for the natural frequency of vibration and the dynamic interaction response profile. In particular, the modulation of the natural frequency by flow parameters such as, the internal fluid transmission velocity, pipeline sediment cover and the geo-mechanical behaviour of the ocean bed are highlighted while the design implications for such transmission pipelines are analyzed.

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