## FEA fatigue

## FEA fatigue

(OP)

Hi,

Which program performs fatigue analyses by FEM, both elastic and elasto-plastic domain? I am interested in thermo-mechanical fatigue.

Thank you!

Udar

Which program performs fatigue analyses by FEM, both elastic and elasto-plastic domain? I am interested in thermo-mechanical fatigue.

Thank you!

Udar

## RE: FEA fatigue

## RE: FEA fatigue

## RE: FEA fatigue

## RE: FEA fatigue

## RE: FEA fatigue

adding to JohnHors:

- Fatigue add-ons of commercial FEA programs performs automatically post-processings you can perform yourself "by hand" (well, at least with Excel...)

- without having a Fatigue add-on, you can proceed like this:

1- a) run a solution for every loadcase which composes your load history, or b) run a transient analysis in which you save the result data for every time step

2- for every loadcase, have your program list the nodal or element stress values you are interested in

3- import the data in Excel (if you have more than 65000 nodes, split the results files)

4- set up in Excel the Voeller or Design Fatigue curve, the Haigh correction, etc, as needed

5- calculate the cumulative damage node by node, and then find the MAX value.

You're done !!

Regards

## RE: FEA fatigue

What dou you think about fe-safe software? (which works with major FEA programs) see:www.safetechnology.com

Does anybody work with it?

tanks in advance

udar

## RE: FEA fatigue

corus