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Ansys Fatigue analysis with non-constant amplitude

Ansys Fatigue analysis with non-constant amplitude

Ansys Fatigue analysis with non-constant amplitude

(OP)
Hi

I have 2 timevarying non-constant amplitude loads on a part as seen in attached image. I want to find out fatigue life in ansys workbench. In static analysis I apply these 2 load cycles to the part. When fatigue tool is inserted in the environment, I think I will need to import the "historydata" file becuase these are iregularly varuing loads. Here I have a doubt which I have defined in the attached image. Please let me know what value should be there in the "history" data file

Should I import same loads again one after other in a file as in static analysis OR
Should I add the 2 load series and import the file OR
Should I add the 2 load cycles and divide by the sum of their peaks to get a "normalized" history data?

Your suggestion will be greatly helpful.

http://files.engineering.com/getfile.aspx?folder=2...




-Regards and Thanks
Pravin Kulkarni

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