Theoretical investigation on hub structure design of subsea connectors

Subsea processing of oil/gas is performed by production system facilities, which are linked into a complete subsea connectors. High reliability and long service life the connectors, defined strict requirement deepwater oil fields, raise challenge design structure components to ASME-VIII code has been applied. The theoretical problems main parameters connector's hub detailed in this paper comparison with shortage ASME method. Therefore, new analytical model developed, named stress method (SAM). separated two parts, i.e. thick-walled cylinder hollow annular plate, axisymmetric bending deformation proposed. geometric equations, constitutive physical equations equilibrium developed obtain displacement solution structure's cylinder. continuity relationships between plate also established, solutions internal forces, displacements, rotation angles acquired accordingly. accuracy SAM investigated comparing calculation results Finite Element Method (FEM) results. A case study carried out compare