Plastic collapse analysis of defective pipelines under multi-loading systems

Y.H. Liu, Z.Z. Cen, Haofeng Chen, B.Y. Xu

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

In this paper, a finite element mathematical programming formulation is presented for the kinematic limit analysis of 3-D rigid-perfectly plastic bodies. A numerical path scheme for radial loading is adopted to deal with complex multi-loading systems. A direct iterative algorithm is employed in solving the above optimization formulation. The numerical procedure has been applied to carry out the plastic collapse analysis of defective pipelines under multi-loading systems. The engineering situation considered has a practical importance in the pipeline industry. The effects of four kinds of typical part-through slots on the collapse loads of pipelines are investigated and evaluated. Some typical failure modes corresponding to different configurations of slots and loading forms are studied.
Original languageEnglish
Pages (from-to)1607-1622
Number of pages16
JournalInternational Journal of Mechanical Sciences
Volume42
Issue number8
DOIs
Publication statusPublished - 2000

Keywords

  • collapse analysis
  • pipelines
  • loading path
  • mathematical programming

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