Validity and limitation of analytical models for the bending stress of a helical wire in unbonded flexible pipes
Applied Ocean Research(2015)
Abstract
•Seven analytical models for the bending stress of a helical wire were summarized.•We developed a 3D finite element model to investigate the seven models.•The validity and limitation of these models for different parameters were discussed.•The analytical model based on spring theory is recommended.
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Key words
Unbonded flexible pipe,Helical armor wire,Bending stress,Finite element,Validity domain
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