Constraint-based fracture mechanics in predicting the failure of welded joints

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

This chapter discusses constraint-based approaches, which have been introduced to reduce the level of conservatism inherent in a single parameter K- or J-based approach to fracture. The constraint-based approach incorporates additional information about the crack tip deformation to quantify the deviation from a high constraint stress field with the amplitude given by J. The theory behind constraint-based fracture is discussed and the different parameters used in the theory are outlined briefly. The incorporation of the constraint-based approach within the commonly used failure assessment diagram (FAD) approach is also described.

Original languageEnglish
Title of host publicationFracture and Fatigue of Welded Joints and Structures
PublisherElsevier Ltd
Pages17-30
Number of pages14
ISBN (Electronic)9781845695132
ISBN (Print)9781845695132
DOIs
Publication statusPublished - Apr 2011

Keywords

  • Constraint
  • Failure assessment diagram
  • Finite element analysis
  • Fracture mechanics
  • Fracture parameters
  • Non-linear fracture mechanics
  • Numerical models
  • Q-stress
  • T-stress

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