Ravi Kiran Bollineni

Please check previous posts:

https://www.researchgate.net/post/I_am_Using_DAMASK_to_simulate_tensile_stress_strain_curve_What_parameters_should_I_change_in_config_file_to_match_simulated_exp_curve#view=609e8eaaaffbd914e019e5d2

https://www.researchgate.net/post/New-user-in-Crystal-plasticity-DAMASK-software-Anybody-familiar-with-DAMASK

DAMASK 3.0 usage in Abaqus is deprecated,

you need to use version 2 for Abaqus.

The constitutive models in DAMASK are documented here:

Article DAMASK – The Düsseldorf Advanced Material Simulation Kit for...

Trust this helps.

Best Regards,

Nicolò

Hello Nicolo Grilli,

Thank you for your reply. I have a question to ask you if you are okay with that.

Currently, I am using a PC with Ubuntu 18.04 as the operating system. I had already installed Abaqus 2018 and Intel parallel studio 2019 version. I didn't install DAMASK software on my PC. For running the DAMASK code with Abaqus I just downloaded the damask-2.0.3.tar.xz file from the DAMASK website. After unzipping that file I got the src folder consisting of all Fortran codes. I am directly running the Abaqus job using the "DAMASK_abaqus.f" file as a UMAT file for the Abaqus simulation by keeping the abaqus_v6.env file in the Abaqus running folder. Here I am attaching the folder I am using for my Abaqus simulation. Could you please find the attached folder.

But in this process I am getting different compilation errors. Is the  process I am following is correct? Do I need to install the DAMASK 2.0.3 version? If so Could you please guide me how to install DAMASK in ubuntu 18.04 and also explain how to combine DAMASK with Abaqus after installing DAMASK. That will be a great help for me.

Thank you once again for your help!

Dear Ravi Kiran Bollineni

Yes, what you are doing is correct, but you need at least to follow the configuration instructions:

https://damask.mpie.de/bin/view/Installation/SystemConfiguration

before trying to compile the UMAT.

If you get an error, you need to post the specific error, otherwise nobody can help.

I am not sure if DAMASK 2 can work with Abaqus 2018,

or if an older version of Abaqus is needed.

Trust this helps,

Best Regards,

Nicolò

Thank you very much Nicolo Grilli. I will work on the configuration instructions. If I come across any error. I will post it.

Thank you very much,

Regards,

Ravi.

Dear Nicolo Grilli,

Now here is the error I am getting when I run the DAMASK with Abaqus

Abaqus Error: The executable pre aborted with system error "Illegal memory reference" (signal 11).

I tried to increase the memory but still the error is not resolved.

Dear Ravi Kiran Bollineni

I don't think that error is related to memory.

It is either a problem with the code or something wrong in the material.config file.

Which version of Abaqus are you using?

Can you try with Abaqus 6.14?

I think that's the version that is meant to work with DAMASK 2.

Also it seems like your code compiles properly,

but you need to attach .log and .dat file to be sure.

In that case, you can add write statements in the code

and debug it, to see at which point it stops.

Best Regards,

Nicolò

Thank you Nicolo Grilli. I will try with Abaqus 6.14 and also check material.config file. If I come across any error. I will post and share .log and .dat files.

Thank you,

Regards,

Ravi.

I resolve the above error by adding this line in the run file "unset SLURM_GTIDS". I am now able to run DAMASK with Abaqus.

Thank you Nicolo Grilli.

Ravi.

Ravi Kiran Bollineni

Thank you for posting the solution.

Let us know if you have other issues.

Nicolò