Strain Based Fatigue Theory

Content:

• Overview of fatigue analysis from finite element models – why it is necessary, what types of problems can be solved successfully
• Strain-based fatigue analysis for crack initiation
  • material response to complex cyclic loading
  • strain-life and cyclic stress-strain relationships
  • mean stress effects and how to select them
  • effects of surface finish and surface treatment
  • using strain-based fatigue with elastic FEA results
  • strain-based fatigue for cast irons
  • computer-based examples
  • will cracks propagate to failure - the critical distance methods and when they should be used
• Biaxial fatigue methods
  • principal stresses and von Mises stresses
  • strain-based biaxial fatigue methods and their derivation
  • critical plane methods
  • how to apply biaxial fatigue methods to steels, aluminium alloys, and cast irons
  • mean stress effects, and modelling elastic-plastic stress-strain responses for biaxial stress