The present work centers on studying the application of the R6-type failure assessment diagram to the nodal joints of offshore platforms. The work concentrates on finite element models of tubular shells and T-joints with a part-through crack subjected to tension and out-of-plane bending loading of the brace. The overall conclusion is that the R6 procedure provided a satisfactory assessment procedure provided that, for tubular joints considered, the measure of fracture was expressed on the ordinate in terms of and an appropriate definition of global collapse was used to normalize the applied load.
Defect Assessment of Tubular T-Joints Using the R6 Failure Analysis Diagram
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Kristiansen, N. O., and Turner, C. E. (November 1, 1993). "Defect Assessment of Tubular T-Joints Using the R6 Failure Analysis Diagram." ASME. J. Pressure Vessel Technol. November 1993; 115(4): 373–380. https://doi.org/10.1115/1.2929544
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