Ansys Fatigue in Workbench
Ansys Fatigue in Workbench
(OP)
Hi all can anyone help
when doing a fatigue safety factor in Ansys WB 13
it would seem anything above 1x106 cycles doesnt change
the fatigue safey factor.
ie i have just set up the same analysis with 1x109 cycles
and 1x106 cycles and the SF doesnt change it only changes
when you get below 1x106 cycles a little confusing
can anyone help
Thanks
Stu
when doing a fatigue safety factor in Ansys WB 13
it would seem anything above 1x106 cycles doesnt change
the fatigue safey factor.
ie i have just set up the same analysis with 1x109 cycles
and 1x106 cycles and the SF doesnt change it only changes
when you get below 1x106 cycles a little confusing
can anyone help
Thanks
Stu





RE: Ansys Fatigue in Workbench
RE: Ansys Fatigue in Workbench
but it is about ansys, the material is carbon steel
and i have found my answer
"In a constant amplitude analysis, if the alternating stress is lower than the lowest alternating stress defined in the S-N curve, the life at that point will be used."
Hence the stresses in my analysis were very low but it does give
confusing results if you dont know the above
Stu