Abstract
The influence of damage in the anti-birdcaging tape and plastic sheath on radial instability is examined through continuum finite element analysis. The numerical procedures are calibrated with physical tests on a flexible pipe subject to pure axial compression. An implicit solver is used in order to take advantage of contact modelling capabilities of ABAQUS software package. A parameter study is conducted to examine the effects of pipe damage, of the anti-birdcaging tape and external plastic sheath, on the potential for radial instability or birdcaging mechanism. Correspondence between the physical and numerical simulations provides confidence in the predicted outcomes.
2015. International Society of Offshore and Polar Engineers
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