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Fatigue Analysis cyclic loading

I was doing fatigue analysis on a model and I cant find the option for cyclic loading while defining the loading history. Also the units of my model are mm,g,s which gives stree units in pascals so should I define everthing in pascals including the ultimate tensile strength?

Also in the load time history should the input be time and forces or time and g(acceleration) values?

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Rahul Rajan_21763

Hi,

Please refer Optistruct below tutorial for fatigue analysis.This will clear your doubts.

OS-1340: Fatigue (Stress - Life) Method

OS-1350: Fatigue (Strain - Life) Method

Optistruct dont follow any unit system.Please maintain unit consistency.

Regards

Rahul R

Altair Forum User

Hi Rahul,

Can you please tell how the fatigue analysis can be done. The references are not working in my Laptop.

I need a clear picturization of the fatigue analysis. I have studied the tutorial that is there in Altair. But I have understood partially. So, if there is any video can you please provide.

And some of the links which has kept in this site are asking client login. How can I use them.

Waiting for your reply.

Thanks

Ranjith

DaiV

Hi all,

I am looking for same question like this topic.

I wanna to setting fatigue analysis by hypermesh, then run solve by optistruct.

However, i dont know how to setting condition then.

Could any one teach me plz.

Thanks alot and have a nice day to all !

Pranav Hari

Hi DaiV

Have a check at the fatigue e-book (https://altairuniversity.com/free-ebook-learning-fatigue-analysis-with-optistruct/)

Thanks

Ezzeddine Karoui

https://skill-lync.freshdesk.com/support/solutions/articles/43000576373-steps-to-be-followed-to-cross-plot-any-two-curves-by-using-math-option-in-hypergraph-2d