Creating S-N Curve without finding listed data

- December 5, 2023 at 2:49 am
  
  Alex Flasch
  Subscriber
  
  I am working in Ansys worbench with the low expansion material FeNi41. I need to run fatigue and life options on this design that includes that material. However, I get the error that I need to gernerate an S-N curve. The issue is that the material properties are limited and the list does not include things like strength coefficent. Any suggestions for troublshooting?
- December 6, 2023 at 2:35 pm
  
  danielshaw
  Ansys Employee
  
  No. A S-N curve is required user input data for a StressLife fatigue analysis using the Mechanical Fatigue Tool (FT). Mechanical cannot generate that curve. To use the FT, you must obtain the S-N curve data for FeNi41 and define it in Engineering Data.
- December 14, 2023 at 1:36 am
  
  Yash Kathar
  Subscriber
  
  From where could we get the sn curve
- December 14, 2023 at 4:32 am
  
  danielshaw
  Ansys Employee
  
  The material supplier should be able to provide the material properties.