Hybrid Parabolic Interpolation – Artificial Neural Network Method (HPI-ANNM) for long-term extreme response estimation of steel risers

This paper presents a computer efficient approach to evaluate the multi-dimensional integral found in the evaluation of the long-term extreme response of marine structures. The proposed method is a hybrid combination of two numerical procedures. The first one consists of a parabolic interpolation scheme used to obtain the statistical parameters describing the short-term peaks probability distribution of the time-series responses, designated as PIM (Parabolic Interpolation Method), which reduces the total number of short-term structural analyses. The second one is an Artificial Neural Network-based surrogate model which is used to obtain long response time histories based on short finite element-based simulations. The approach is named as HPI-ANNM (Hybrid Parabolic Interpolation – Artificial Neural Network Method). The efficiency and accuracy of the proposed hybrid method is compared with the complete long-term integration method in the analysis of 100-yr characteristic values of cross-section utilization ratios of a Steel Catenary Riser (SCR) connected to a semi-submersible platform in deep water.

• Record URL:
  https://doi.org/10.1016/j.apor.2018.05.008
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S0141118718301378
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01411187
• Supplemental Notes:
  • Abstract reprinted with permission of Elsevier.
• Authors:
  • Monsalve-Giraldo, J S
  • Cortina, Jo�o P R
  • de Sousa, Fernando J M
  • Videiro, Paulo M
  • Sagrilo, Luis V S
• Publication Date: 2018-7

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: pp 221-234
• Serial:
  • Applied Ocean Research
  • Volume: 76
  • Publisher: Elsevier
  • ISSN: 0141-1187
  • Serial URL: https://www.sciencedirect.com/journal/applied-ocean-research

Subject/Index Terms

• TRT Terms: Neural networks; Offshore structures; Steel structures; Structural analysis
• Uncontrolled Terms: Steel catenary risers
• Subject Areas: Bridges and other structures; Design; Marine Transportation;

Filing Info

• Accession Number: 01675902
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 24 2018 10:06AM