Effect of autofrettage in the thick-walled cylinder with a radial cross-bore

H. Li, R. Johnston, D. Mackenzie

Research output: Contribution to journalArticle

5 Citations (Scopus)
511 Downloads (Pure)

Abstract

The effect of autofrettage on the stress level in thick-walled cylinders with a radial cross-bore is investigated by applying inelastic finite element analysis with cyclic pressure loading. A macro is created in ANSYS to calculate the equivalent alternating stress intensity, S-eq, based on the ASME Boiler and Pressure Vessel Code. The value of S-eq is used to evaluate the fatigue life of the vessel. For a specific cyclic load level, a distinct optimum autofrettage pressure is identified by plotting autofrettage pressure against the number of cycles from design fatigue data. The fatigue life of the autofrettaged vessel with such an optimum pressure is increased compared with the case where no autofrettage is used.
Original languageEnglish
Pages (from-to)011205
Number of pages5
JournalJournal of Pressure Vessel Technology
Volume132
Issue number1
DOIs
Publication statusPublished - 4 Jan 2010

Keywords

  • autofrettage
  • thick-walled cylinder
  • radia cross-bore
  • inelastic finite element analysis
  • ANSYS
  • cyclic load
  • fatigue
  • pressure vessels

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