iMechanica - Rolling Contact Fatigue in Ansys Multiphysics - Comments

Thanks to both of you..I

adanoop — Fri, 06 Aug 2010 09:23:38 -0400

Thanks to both of you..I will get back when I need some more help! Thanks once again for valuable help..

Mike gave you a good start

Yongming Liu — Thu, 15 Jul 2010 21:08:20 -0400

Mike gave you a good start point. If you are really looking at the analysis using ANSYS, these three papers might help. They include both S-N curve-based and fracture mechanics-based approaches. The focus is on the shattered rim failure (subsurface cracking) rather than surface cracking.

Liu, Y., Liu, L., Stratman, B., Mahadevan, S.. Multiaxial fatigue reliability analysis of railroad wheels. Reliability Engineering and System Safety, Vol. 93, Issue 3, pp. 456-467, 2008.

Liu, Y., Liu, L., Mahadevan, S. Subsurface fatigue crack propagation under rolling contact loading. Engineering Fracture Mechanics, Vol. 74, pp. 2659-2674, 2007.

Liu, Y., Stratman, B., Mahadevan, S. Fatigue crack initiation life prediction of railroad wheels. International Journal of Fatigue, Vol. 28, Issue 7, pp. 747-756, 2006.

Hope it helps.

Yongming

SN curves of RCF are a different story...

Mike Ciavarella — Sun, 11 Jul 2010 10:25:35 -0400

If you want to make stress field of a rolling contact, the first step is to use ready closed form results. In fact, it is not obvious at all even with exact results, what you can apply to predict fatigue. See these papers

On the Dang Van fatigue limit in rolling
contact fatigue
International Journal of Fatigue, Volume
28, Issue 8, August 2006, Pages 852-863
M. Ciavarella, F. Monno, G.
Demelio

A comparison of multiaxial fatigue criteria
as applied to rolling contact fatigue
Tribology
International, In Press, Corrected Proof,
Available online 11 June 2010
M. Ciavarella, F. Monno

Hope this helps.

Michele Ciavarella, Politecnico di BARI - Italy, Rector's delegate.
http://poliba.academia.edu/micheleciavarella
Editor, Italian Science Debate, www.sciencedebate.it
Associate Editor, Ferrari Millechili Journal, http://imechanica.org/node/7878

Rolling Contact Fatigue in Ansys Multiphysics

adanoop — Sun, 04 Jul 2010 10:22:59 -0400

Hello all,

I want to simulate Rolling Contact Fatigue in Ansys Multiphysics. I am
not sure whether we can perform this task in Ansys Multiphysics. Can
anybody help me regarding this? Is that possible to get S-N Curve as
result? Please help me..

-Anoop