Dynamic response of deep-water catenary risers made of functionally graded materials

J. C.R. Albino, C. A. Almeida, I. F.M. Menezes, G. H. Paulino

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

This paper examines the structural behavior of a steel catenary riser (SCR) with a segment composed of a functionally graded material (FGM) at the touchdown zone (TDZ). A co-rotational beam formulation is employed to evaluate the influence of material gradation on the static and dynamic nonlinear behavior of the riser. A finite element model is developed to predict the riser response considering environmental and operational conditions such as self-weight, buoyancy, current, soil contact, waves, buoys, and ship motion. Moreover, a comparison of SCR configurations is made between those constructed from FGM and those constructed from standard homogeneous materials. The study indicates that an SCR configuration with an incorporated FGM segment improves the curvatures near the TDZ, where designing to mitigate fatigue damage is critical.

Original languageEnglish (US)
Article number103660
JournalMechanics Research Communications
Volume111
DOIs
StatePublished - Jan 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • Finite element
  • Functionally graded material
  • Nonlinear dynamic analysis
  • Steel catenary riser

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