Abaqus EEIG Output

Question

Abaqus EEIG Output

lmorand (Student)

(OP)

18 Mar 22 14:46

I'm working on implementing the inherent strain method in Abaqus 2022.
In summary, I'm doing a small, sequential thermo-mechanical simulation in order to get eigenstrains that are then applied to a mechanical, part-scale simulation.

I'm been able to run a thermo simulation that outputs NT, and feeds that into the first mechanical simulation. I can get that one to output stress (S), displacement (U), etc., but the eigenstrain (EEIG) output is always zero across the entire part. Is there some setting/factor missing in order to get this output?

Any help is appreciated.

FEA way (Mechanical) · Answer 1 · 2022-03-18 15:04:02

Check the output files (msg, dat) for warning messages. They might indicate the source of this problem.

lmorand (Student) · Answer 2 · 2022-03-18 15:15:24

The only warnings I have are for 2x recoater interference in the msg file.
The dat file has 4x:

- THE OPTION *TEMPERATURE IS USED BUT THE OPTION *INITIAL
CONDITIONS,TYPE=TEMPERATURE IS NOT. THE INITIAL TEMPERATURE VALUES
ARE ASSUMED TO BE ZERO.

- THE REQUEST FOR MISES OUTPUT WILL BE REPLACED BY A REQUEST FOR S
OUTPUT

- OUTPUT REQUEST CF HAS BEEN REMOVED AS THERE ARE NO APPLICABLE
LOADS IN THIS STEP

- INITIAL TIME GIVEN BY FILE DATA IS 2.81250E-04. THIS IS LESS THAN
THE SUGGESTED INITIAL TIMESTEP OF 2.0000. INITIAL TIMESTEP RESET
TO 2.81250E-04.

FEA way (Mechanical) · Answer 3 · 2022-03-18 15:52:24

Have you prepared this simulation using the AM Modeler plug-in or manually ?

Check the Knowledge Base article "Abaqus/CAE Plug-in Utility for Additive Manufacturing Process Simulation" if you have access to it. There you can find ready-made workshop files (including instructions) for Abaqus 2021 and older. One of these examples concerns eigenstrain analyses.

lmorand (Student) · Answer 4 · 2022-03-18 15:59:05

Yes, the files were generated with the plug-in, based on those examples. I need the thermo-mechanical eigenstrain result to feed into the eigenstrain part print simulation.

I'm just confused as to why some outputs were successful, but EEIG failed without a warning message.

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Abaqus EEIG Output