I recently taught part of the Fatigue Methods for fe-safe class online, and had a great time interacting with the end-users and colleagues on the call. I was fortunate to have two other colleagues teaching with me, so that we could all share our expertise.

In the class we discuss three case studies as a Motivation for Fatigue. The paper gives the example of cylinder head fatigue and compares the traditional hand-calculation method of a Goodman Line with the S-N diagram approach (this can be done in fe-safe if required) with our default multiaxial strain-based fatigue algorithms in fe-safe. It should come as no surprise that the traditional method identified the wrong hotspot (a mistake that would have driven bad redesign if the users didn't have fe-safe).

One of the students asked for this paper, related to the first case study so I am sharing it here:

Gray Iron Fatigue Analysis in fe-safe Compared to Goodman Theory, Kendra J. Eads and Jeffrey D. Jones, Cummins Inc., fe-safe User Group Meeting 2006

The file is also attached:

Want to know more about Grey Iron Fatigue? Contact your SIMULIA Support representative or access the fe-safe documentation on http://help.3ds.com. :

• fe-safe User Guide (section 13 and 26)
• Fatigue Theory Reference Manual (section 2)