Fracture and fatigue analysis of an agitator shaft with a circumferential notch


Karaagac C., TOYGAR E. M.

ENGINEERING FRACTURE MECHANICS, vol.73, no.14, pp.2034-2052, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73 Issue: 14
  • Publication Date: 2006
  • Doi Number: 10.1016/j.engfracmech.2006.03.014
  • Journal Name: ENGINEERING FRACTURE MECHANICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2034-2052
  • Keywords: stress intensity factor, stress analysis, fatigue analysis, fatigue life, notch, crack
  • Dokuz Eylül University Affiliated: Yes

Abstract

This paper is concerned with the fracture analysis of an agitator shaft of a large vessel and predicting its high cycle fatigue life. The agitator shaft has a circumferential notch around it and is subjected to remote bending and torque created by the mixing operation. The problem is comprised (i) the analyses of the bending force and torque acting on the agitator by using the analytical method, (ii) calculation of stress intensity factors under mode I and III loading conditions by using finite element method and, (iii) fatigue analysis of the agitator shaft failed in service.