A 3D elasto-plastic soil model for lateral buckling analysis

Ole Hededal, Torsten Strandgaard

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

387 Downloads (Pure)

Abstract

Modeling the lay-down of pipelines and subsequently the in- service conditions for a pipeline involves definition of a pipe-soil interaction model. A generalized true 3D elasto-plastic spring element based on an anisotropic hardening/degradation model for sliding is presented. The basis for the model is the elasto-plastic framework. A generic format is selected, allowing different yield criteria and flow rules to be implemented in a simple way. The model complies to a finite element format allowing it to be directly implemented into a standard finite element code. Examples demonstrating the robustness of the model are presented.
Original languageEnglish
Title of host publicationProceedings of the Eighteenth (2008) International Offshore and Polar Engineering Conference : Pipelines and risers XI
Volume2
Place of PublicationVancouver
PublisherThe International Society of Offshore and Polar Engineers (ISOPE)
Publication date2008
Edition1
Pages261-268
ISBN (Print)978-1-880653-70-8
Publication statusPublished - 2008
Event18th International Offshore and Polar Engineering Conference - Vancouver, Canada
Duration: 6 Jul 200811 Jul 2008

Conference

Conference18th International Offshore and Polar Engineering Conference
CountryCanada
CityVancouver
Period06/07/200811/07/2008

Keywords

  • elasto-plastic model
  • pipe-soil interaction
  • pipelines

Cite this

Hededal, O., & Strandgaard, T. (2008). A 3D elasto-plastic soil model for lateral buckling analysis. In Proceedings of the Eighteenth (2008) International Offshore and Polar Engineering Conference: Pipelines and risers XI (1 ed., Vol. 2, pp. 261-268). The International Society of Offshore and Polar Engineers (ISOPE).