FINITE - ELEMENT ANALYSES OF SOME JOINTS WITH THE WELDS TRANSVERSE TO THE DIRECTION OF STRESS

It is know that the geometrical shape of welded joints leads to the formation of stress concentrations both at the weld toe and, in the case of load-carrying fillet welds, at the weld root. The result is that fatigue cracks are liable to form in service. The rate of growth of a fatigue crack can be related to the range of stress-intensity factor at the crack tip. Since it is not known to what extent the stress concentration act on the propagating crack, it is difficult to carry out a crack-propagation anaysis for a welded joint or to assess the influence of a defect from the point of view of brittle fracture. The Author describes some finite-element analyses that have been carried out. Three main types of joint have been studied, namely transverse non-load-carrying fillet welds, transverse load-carrying fillet welds, and K butt welds. In addition, in the case of the non-load-carrying fillet welds the influence of biaxial, as opposed to uniaxial, loading has been investigated. For comparative purposes, a limited investigation was also made of the influence of weld shape in transverse butt welds.

• Corporate Authors:

  Welding Institute

  Abingdon Hall
  Cambridge CB1 6AL,   England 
• Authors:
  • Gurney, T R
• Publication Date: 1976

Media Info

• Features: References;
• Pagination: 20 p.
• Serial:
  • Welding Research International
  • Volume: 6
  • Issue Number: 4
  • Publisher: Welding Institute

Subject/Index Terms

• TRT Terms: Butt welds; Cracking; Fatigue cracking; Fillet welds; Finite element method; Joints; Stresses; Welds
• Uncontrolled Terms: Welded joints
• Old TRIS Terms: Weld stresses
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00153100
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: May 11 1977 12:00AM