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Vertical displacements displayed below for weight case only (selfweight including fluid). Right-side window is weight case with consideration of P-delta with large displacements with max vertical displacement of -8.69". Left-side window is are results from the same weight case, but ignoring P-delta effects, with a max vertical displacement of -41.5", which is what other legacy piping stress programs will report. With a long flexible pipeline like this, there is catenary behavior that needs to be accounted for in which axial load is being carried by distributed to the anchors to help support the pipeline . P-delta with large displacements accounts for this catenary behavior which made quite a difference in this example..
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