AN APPROXIMATE DYNAMIC MODEL describing the undamped radial vibration of thin-walled steel pipes with an overwrap of laminated fibre-reinforced polymer (FRP), due to fluid-hammer conditions, is derived. The derived model is an uncoupled model, in which the elastic properties of the pipe and fluid are used to estimate the properties of the fluid-hammer-induced pressure wave. This pressure wave is used as the exciting load in a dynamic analysis of the pipe wall. The derived governing equation is solved analytically by utilizing the properties of Fourier series. The model is implemented on a representative example. It is observed that increasing the number of FRP laminae may lead to larger radial deflections, because the natural frequency of the pipe is significantly altered.
How to Cite
: fluid hammer, shell theory, laminate theory, pipe vibration, overwrapped pipelines
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