Fracture representation and assessment for tubular offshore structures

Abstract Circular hollow sections have evolved to be a primary choice for the fixed type offshore structures (namely jackets) and the mobile type offshore platforms (jack-ups), due to its appealing characteristics in minimizing the wave forces and structural efficiency in resisting various loading conditions. This chapter highlights the recent developments in the failure analysis of welded tubular joints, covering the evaluation of the crack driving forces, the damage mechanics representation of the fracture process in tubular joints, failure assessment procedures, scaling of the material fracture resistance to the tubular joint level, and subsequently to the global structural level.

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