Frequency analyses of free spanning subsea pipelines with finite element method

Zhi Gang Xiao, Xiao Ling Zhao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Free spans or suspended spans are normal to subsea pipelines due to the irregularity of seabed and/or the scouring action of sea water. A problem of significance to the free spans of subsea pipeline is that currents or waves flowing across pipelines can shed vortices and induce vibration that may cause fatigue damage to pipelines. Natural frequency is required when solving vibration amplitude and cyclic stresses in the free span. The natural frequency is usually calculated with simplified equations, where factors such as boundary conditions and axial forces are not accurately taken into account. This study is therefore intended to investigate the influence of boundary conditions, axial force, and multiple spans on the natural frequencies of pipeline and give recommendations on frequency calculation.

Original languageEnglish
Title of host publication5th International Conference on Advances in Steel Structures, ICASS 2007
Pages645-650
Number of pages6
Publication statusPublished - 2007
Externally publishedYes
Event5th International Conference on Advances in Steel Structures, ICASS 2007 - Singapore, Singapore
Duration: 5 Dec 20077 Dec 2007

Publication series

Name5th International Conference on Advances in Steel Structures, ICASS 2007
Volume3

Conference

Conference5th International Conference on Advances in Steel Structures, ICASS 2007
Country/TerritorySingapore
CitySingapore
Period5/12/077/12/07

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Metals and Alloys

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