Hello, can you introduce how to use Python scripts

sir how to import odb file to neper so see the deformed micro-structure and how exactly if we are making a micro-structure of let say 500 grains how we input the material properties of those 500 grains please do tell and if possible UPLOAD ONE MORE VIDEO STARTING FROM MAKING MICRO-STRUCTURE IN NEPER,TRANSFER IT TO ABAQUS AND THEN DOING ALL THOSE SIMULATION

@eralpdemir

Ай бұрын

Hi, You simply change the number of grains from 30 to 500 in the file. There is a really nice documentation in Neper's website (neper.info/). Please have a look at these. I will try to prepare another video for that. Thanks

Hello Enralp Could you please provide some documents about the theoretical part of these UMats to introduce the constitutive relations? I saw a description file in the video, but I went to github and found it was not there

@eralpdemir

Ай бұрын

Hi, the manuscript is under review now. I will keep you posted as soon as it gets published. thanks

Hello, Eralp, i have a question about grains generated by Neper, can we use our EBSD data to generate grains in Neper? if it's yes, how we can do that? Thank you very much

@eralpdemir

7 ай бұрын

Hi Ayyoub, I have used Dream3D for that once. There are available pipelines in their website. I have not used NEPER for that purpose but it should be possible too. The limitation of this approach is the single orientation representing a grain. If you like to include in-grain orientation scatter, I recommend you use a direct mapping by using an orientation analysis software like MTEX to filter out bad data or to coarsen the step size. Bests, Eralp

@AyyoubDZIRI

7 ай бұрын

@@eralpdemir Thank you so much for your help

Hi thank you for the tutorial. I have few questions. 1) is the code applicable to s3R and s4R elements. 2) I created a model using neper and imported it directly to Abaqus using .inp extension from neper. I applied the boundary condition just like you have explained in this video but without the fortran codes or UMAT or matlab or pyton. I would like to know if this will work if i define the material properties of aluminum in my abaqus material module.

@eralpdemir

8 ай бұрын

Thank you. 1) Yes, the code is applicable to 2D for plane stress and plane strain cases. I have not tried with shell elements though. 2) That sounds ok. If you enter first 6 elements for the PROPS correctly it will work. You have assign material -ID to PROPS(5) which shall correspond to the properties of aluminum. You change the material parameters in usermaterials.f. Hope this helps, bests

@AXEGAMINGHDH

8 ай бұрын

Understood thank you.

Hello, Eralp! Thank you for sharing. I have a question for you: I want to do a phase transition process and output matid of each Material and other parameters of User Material, because I want to realize their dynamic change, that is, int(PROPS(5)) output. Can't this abaqus be directly output? Can I write an implementation in statev_outputs? Because there may be phase precipitation from fcc to bcc in my Ni-based superalloy, I see that your code also has the two-phase part of the Ni-based alloy, may I ask if that part is similar? Thank you very much!

@user-xg7bk5fl8t

8 ай бұрын

I am looking forward to further communication with you. If I have the opportunity, I also want to join in the improvement of the code. I really appreciate your work. With great respect!

@eralpdemir

8 ай бұрын

I am sending a few links for paper that dealt with phase transformations. You may find more relavant references. - phase field approach: doi.org/10.1016/j.ijplas.2018.03.009 - continuum approach: doi.org/10.1016/j.ijplas.2010.09.008

@eralpdemir

8 ай бұрын

@@user-xg7bk5fl8t Please contact through the Github link to collaborate. So that I will let my line manager know about it. Thanks for your interest, Eralp

Such a nice tutorial, is this code is applicable for 2D?

@eralpdemir

10 ай бұрын

Yes, the crystal plasticity code can work with plane strain and planes strain elements.

@sajidali-qg1mg

10 ай бұрын

@@eralpdemirThank you for your kind response, I have query about.inp file. Using this code should I generate or add some other work in Abaqus. I mean if I generate.inp file in Neper and open in Abaqus and then add cracks or other work in that.inp file is it possible?

@eralpdemir

10 ай бұрын

@@sajidali-qg1mg Hi, yes there are two ways to create the .inp file by using the matlab or python scripts. You have to enter the BCs and do other changes in ABAQUS. This input is designed to use our UMAT code that you may in the same Github link. Bests

@sajidali-qg1mg

10 ай бұрын

@eralpdemir Thanks once again

@eralpdemir

8 ай бұрын

Many thanks. Yes, it is applicable to 2D plane strain and plane stress cases. Apologies for my late reply. Bests