Fatigue Analysis without SN-curve data.

- August 28, 2023 at 10:17 am
  
  Sahil Thakkar
  Subscriber
  
  I am trying to perform fatigue analysis of a quenched standard cylindrical testing specimen. The material is 1.4301 / AISI 304 / X5CrNi18-10. The loading condtions are that of a rotating bending fatigue test. However, I do not have the SN-curve data for this material. I was adviced to use the hardness distribution on the surface to perform the analysis. How do I use the hardness information to do the analysis ?
- August 29, 2023 at 10:05 am
  
  Sahil Sura
  Ansys Employee
  
  Hello Sahil,
  The S-N curve of a material plays a critical role when analyzing any geometry with the respective material.
  So if you are able to generate the s-n curve data by physical testing or through data books, that would be helpful.
  Please check the following videos which are helpful in approaching the fatigue problem in Ansys -
  ANSYS Student: Fatigue Analysis of a Formula SAE Hub - YouTube
  A Look at the Ansys Mechanical Fatigue Module | Ansys Tutorials - YouTube
  6.1. How Fatigue Is Calculated (ansys.com)
  
  Would you please help with the details on the approach and any relation of hardness distribution with the fatigue properties of the material more in-depth? So I'll be able to help resolve the fatigue problem with ease
  Hope this helps!
  Thanks,
  Sahil
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