A comparison of plastic collapse and limit loads for single mitred pipe bends under in-plane bending

Robbie Neilson, J. Wood, R. Hamilton, H. Li

Research output: Contribution to journalArticle

17 Citations (Scopus)
105 Downloads (Pure)

Abstract

This paper presents a comparison of the plastic collapse loads from experimental in-plane bending tests on three 90 degree single un-reinforced mitred pipe bends, with the results from various 3D solid finite element models. The bending load applied reduced the bend angle and in turn, the resulting cross-sectional ovalisation led to a recognised weakening mechanism, which is only observable by testing or by including large displacement effects in the plastic finite element solution. A small displacement limit solution with an elastic-perfectly-plastic material model overestimated the collapse load by 40%. The plastic collapse finite element solution produced excellent agreement with experiment.
Original languageEnglish
Pages (from-to)550-558
Number of pages9
JournalInternational Journal of Pressure Vessels and Piping
Volume87
Issue number10
DOIs
Publication statusPublished - Oct 2010

Keywords

  • mitred pipe bend
  • plastic collapse
  • finite element analysis
  • bending
  • mechanical engineering

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