I used Neper to generate the tessellation file and the meshing file, and assigned the crystal orientation. How to import these files into ABAQUS for crystal plastic finite element analysis(CPFEA, CPFEM)?
Dear Zhengwei Fan
You can try this piece of software:
https://github.com/ngrilli/Neper2CAE
that is documented in the following publication:
Neper2CAE and PyCiGen:
Scripts to generate polycrystals and interface elements in Abaqus
https://www.sciencedirect.com/science/article/pii/S2352711020303642
Best Regards,
Nicolò Grilli
National University of Singapore
Dear Xiang Hu
Indeed the code I developed serves that purpose.
The crystal structure will be generated by Neper
then imported in Abaqus CAE.
This is limited to columnar grains,
if you want non-columnar grains, you can use the neper option
of exporting a mesh into .inp file (check Neper manual)
However, that creates only a mesh, not a .cae geometrical model.
The advantage of the .cae model is that you can further modify it
and add the boundary conditions in Abaqus CAE.
Please try my code, there are instructions on github,
if you have problems using it, feel free to contact me.
Best Regards,
Nicolò Grilli
National University of Singapore
Dear Nicolò Grilli
Thank you for your answer.
Yeah, I have read your code and its instruction on GitHub.
Your code is definitely a helpful tool for parsing columnar grains and transforming the .tess file to Abaqus by extruding 2D plate to a parallelpiped model with specific depth.
What I am now struggling with, however, is a multiscale tessellated 3D RVE. :)
After trying importing the meshed .inp file obtained by Neper -M Module to Abaqus, I found it was weird that instead of divided by grains, all of elements were part of one single part without any information of grains or orientation. :(
But anyway, thanks for your reply.
Best Regards,
Xiang Hu
RWTH Aachen University
Dear Xiang Hu ,
Not sure about the multiscale tessellations in Neper. If the .inp file generated by Neper does not contain information on the grains, you will not be able to retrieve them in Abaqus CAE
If you want to refine the mesh in a region of a particular grain, then you can use the Neper2CAE tool, then you use the partition tool in Abaqus CAE to separate a region of a grain, then you can set the seeds of the mesh in a way they generate a finer mesh in your region of interest.
I am not sure if this helps in your application, but you can use the proposed method to refine the mesh in specific regions or specific grains.
Best Regards,
Nicolò Grilli
National University of Singapore
Hello Nicolò Grilli,
I was wondering if there is another open python-source code that can create an Abaqus CAE file with the original non-columnar grains created by Neper?
Thanks.
Best regards.
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