A methodology for structural analysis and optimization of riser connection joints

作者：Vargas Bazan Felipe Alexander; Prates de Lima Edison Castro; de Siqueira Marcos Queija; Netto Siqueira Elizabeth Frauches; Duarte de Lemos Carlos Alberto

来源：Applied Ocean Research, 2011, 33(4): 344-365.

DOI：10.1016/j.apor.2011.06.003

• Bend stiffener
• Stress joint
• Structural optimization
• Riser analysis

In riser structural systems, the region where the riser is connected to the platform is critical due to the development of high stress levels. To reduce the stress concentration in this region, bend stiffeners and stress joints are used in order to provide a gradual stiffness transition between the riser and the platform. The present paper presents an optimization design approach for bend stiffeners and stress joints, using a slender beam procedure for the connection joint analysis and an evolution strategies multi-objective optimization algorithm. This approach produces similar results when compared to a finite element analysis of the complete riser, but with significant reduction of computational costs. Numerical examples are presented, showing the efficiency and robustness of the suggested methodology.

• 出版日期2011-10