Abstract
This paper analyses the wave scattering generated by point pressure loads in the vicinity of infinite fluid-filled circular pipelines submerged in a homogeneous fluid medium. The pipeline has a constant cross-section and is modelled as a homogeneous elastic material. The three-dimensional (3-D) response is formulated in the frequency domain, and is obtained as a discrete summation of the 2-D solutions found for different axial wavenumbers. Time solutions are computed by means of inverse Fourier transforms. Complex frequencies are used to avoid aliasing phenomena. The main focus of the paper is on the dynamic analysis of the stresses generated inside and at the surface of the pipeline by a point pressure load placed in the surrounding medium. Different positions of both the source and the receivers are considered. The effect of the relation of the wall thickness to the radius of the pipeline is also studied.
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