Learning Forum

[javat33489]

Hi all.

I'm simulating drilling.

The stage of using fatigue has come.

I used the following cards in my calculation:

FATIGUE

MULTIAXIAL_FATIGUE

MAT_ADD_FATIGUE

CURVE - SN

DATABASE_D3FTG

My problem is that the d3ftg file is not written, although I specified the write cycle:

I set the cycle for recording d3plot to 0.1, and also for d3ftg. But after writing to d3plot, writing to d3fg does not occur, in addition, the calculation simply freezes to infinity, and if you look at the processor load, it is not there.

WHY?

Thank you.

___

[Erik Kostson]

Hi

Try to post this in the LS-Dyna forum also.

 

All the best

Erik

[javat33489]

The link leads to this post. And you say to write to the LS-Dyna section. In the end, no one helped me.

[javat33489]

The topic in LS-Dyna is closed.

Could you respond to this thread?

I really need help on where I can look to find the cause.

[Michael Krenzel]

In my lsdyna *frequency_domain_random_vibration analyses, I have to set MSTRES of keyword *CONTROL_IMPLICITE_EIGENVALUE to "1"... otherwise d3ftg is not written because the fatigue analysis depends on stresses. (see also LS-DYNA Manual  R13 Vol. I ; 22-56 Remarks 2.). This might also help in your case.