Offshore Technology Research Center - A World Leader in Offshore Technology, Research, Education and Testing

  • Home
  • About Us
    • Mission Statement
    • Contact Us
  • Research
    • Capabilities
    • Current Projects
    • Publications
      • Floating Structures
      • Risers and Moorings
      • Mechanics of Materials
      • Seafloor Engineering and Characterization
      • Subsea Systems
      • Risk/Reliability Assessment and Management
  • Wave Basin
    • Specifications
  • People
    • Staff
    • Researchers
  • Partners
    • Research Sponsors
    • Clients
  • Calendar
  • Search
You are here: Home / Research / Publications / Seafloor Engineering and Characterization / Numerical Model for Steel Catenary Riser on Seafloor Support

Numerical Model for Steel Catenary Riser on Seafloor Support

Summary

Project Title:
Numerical Model for Steel Catenary Riser on Seafloor Support

 

Prinicipal Investigators:
Charles Aubeny, Giovanna Biscontin, Jun Zhang

 

Sponsor:
Minerals Management Service and Industry Consortium

 

Completion Date:
December, 2005

 

Final Report ID:
 A168(Click to view final report abstract)

Note: This study is part of a broader project “Seafloor Interaction With Steel Catenary Risers ” (MMS Project 510).

More detailed analysis of risers can be conducted using non-linear finite element analysis programs. Most riser analysis codes use either rigid or linear elastic contact surfaces to simulate the seabed, which model vertical soil resistance to pipe penetration, horizontal friction resistance and axial friction resistance (Bridge et al., 2003). Until recently most analysis was conducted assuming the seabed is rigid or that it exhibits a linear stiffness. A rigid surface generally gives a conservative result since it is unyielding, while the linear elastic surface is a better approximation of a seabed.

This study concentrates on conducting numerical studies to understand basic interaction mechanisms and on developing a simplified model for a seafloor interaction with steel catenary risers within the touchdown zone. The response of the seafloor to SCR movements will be studied to formulate a proper boundary condition at the seafloor touchdown zone for structural analysis of a riser subjected to vertical loading representing the vessel motion and seabed current. The relative importance of various seafloor and loading conditions on bending stresses of the riser pipe resting on nonlinear spring supports will also be investigated. This research concentrates on only vertical motions of riser pipe, although axial and lateral motions may have to be considered in the future.

Texas A&M Engineering Experiment Station
Texas A&M University
University of Texas Cockrell School of Engineering

Offshore Technology Research Center
1200 Mariner Drive
Texas A&M Research Park
College Station, TX 77845

Phone: (979) 845-6000

 

About Texas A&M Engineering Experiment Station
Privacy Policy
Web Accessibility
Website Feedback

Copyright © 2023 · Texas A&M Engineering Experiment Station · All Rights Reserved