Fatigue
Material model for high cycle fatigue
In fatigue analysis, it is common to use S-N curve from database for spesific material, and some time for spesific way of loading. Is there any way to predict fatigue from direct simulation? For example, giving cyclic loading (10^5 times) and the material will suffer damage and eventually failed. In some FEM codes (MARC, LSDYNA, etc) there is Lemaitre-Chaboche model used to analyze material behavior under low cycle cyclic loading.
Thanks in advance
Chali
Fatigue life calculation - reporting stress
For fatigue life estimation (HCF & LCF), I am not sure which stress shall I consider i.e. max. principal stress or von Mises stress & what should be the criteria for selection of the same? Shall we be driven by material model (i.e. ductile or brittle) or mode of failure or some thing else?
7th IC Fatigue Damage of Structural Materials - just over 2 weeks to go!
The 7th International Conference on Fatigue Damage of Structural Materials will be held in Hyannis, Mass., USA, 14-19 September. Hyannis is situated 80 mi/130 km from Boston's Logan International Airport and is easily reached either by car or by public transport.
The full oral and poster programs, as well as registration details can be found on the conference website at www.fatiguedamage.elsevier.com
Fatigue damage initiation - computational methods
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Dear iMechanicians,
It seems that nobody here is active in fatigue life prediction focused on the initiation period. I believe it should be here and do not understand why the fracture mechanics has its place here but the initiation of cracks has been forgotten. Although cracks are very interesting there is a lot industrial sectors, where they are not wanted. Is not the reason of the current situation that the available computational tools that are free are mostly related to crack growth?
Regards,
Jan Papuga
Program available for 7th IC Fatigue Damage of Structural Materials
The full oral program for the 7th International Conference on Fatigue Damage of Structural Materials is now available at http://www.fatiguedamage.elsevier.com/index.htm. Join your peers by registering for this popular single-stream meeting held in Hyannis, MA, USA on beautiful Cape Cod, September 14-19, 2008.