Abstract
Since the tension leg platform (TLP) needs to work in the ocean for a long time, it requires a high cost to replace any components. The working life is a key design element. The flexjoint is the crucial load-bearing component in the TLP mooring system. It has a multilayer metal/elastomer structure, and its working life generally depends on the rubber portion. In this paper, the fatigue life of flexjoint is calculated by crack nucleation method. Firstly, the dumbbell test piece is used to perform the uniaxial tensile fatigue test. The strain-fatigue life curve of the rubber material is obtained. The fatigue life of the flexjoint is calculated by the crack nucleation method. The fatigue test device of the flexjoint is developed, and the calculation result of crack nucleation life is verified by experiments.
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