Stress concentration at crossholes in thick cylindrical vessels

P. Makulsawatudom, D. Mackenzie, R. Hamilton

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Elastic stress concentration factors (SCFs) for internally pressurized thick cylindrical vessels with radial and offset circular and elliptical crossholes are presented. Three forms of intersection between the crosshole and main bore are considered: plain, chamfered and blend radiused. The minimum SCF was found to occur for the plain intersection configuration, with the peak stress at the crotch corner between the main bore and crosshole on the longitudinal plane of symmetry. Incorporating a chamfer or blend radius at the intersection reduces the stress concentration at the main bore but introduces higher peak stress elsewhere in the chamfer or blend region.
Original languageEnglish
Pages (from-to)471-481
Number of pages10
JournalJournal of Strain Analysis for Engineering Design
Issue number5
Publication statusPublished - 2004


  • stress concentration factor
  • thick pressure vessels
  • fatigue
  • mechanical engineering
  • strain analysis
  • engineering design


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