Generating 60nm thickness along the grain boundaries of a microstructure

Altair Forum User
Altair Forum User
Altair Employee
edited November 2020 in Community Q&A

I generated a microstructure (5 x 5 x 2 micrometer)  using Abaqus input file (attached).  But the microstructure does not have

grainboundary thickness.

 

I would like to generate thickness (60nm) along the grain boundaries using hypermesh.

 

Could you help me generating 60nm thickness along the grain boundaries?

 

Thank you

 

 

 Operating System and Version:                Windows 10

 

Unable to find an attachment - read this blog

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Answers

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited February 2018

    Your grain boundaries cover whole microstructure? And you want to make them as solid elements?

     

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited February 2018

    If I understand correctly, here's my test:

    abaqus3d_4grains_5x5x2micro_1.png.553c8413a1b951ed9b8d3b3192c4508f.png

     

    Create external skin of all 3 components:

    abaqus3d_4grains_5x5x2micro_2.png.6974e05f81e0aa0a042cecc29cdc5a05.png

     

    Got '^faces' :

    abaqus3d_4grains_5x5x2micro_3.png.051348bef4f61734538edc7124360498.png

     

    Make solid elements by 'elem offset' :

    abaqus3d_4grains_5x5x2micro_4.png.61f27654985e07b16047ef6f768ccd0b.png

     

    And got final layer boundary :

    abaqus3d_4grains_5x5x2micro_5.png.5bdcbf5370ee192e6f9d698a898fb8d5.png

     

    Is that you're looking for ?

     

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2018

    Q Nguyen-Dai

     

    Thank you very much for your suggestion.

     

    Based on your figure, we are not sure whether you understood our definition of grain boundary thickness.  So I attached a picture showing the grain boundaries(GB) in white color.  I think the GB can be modeled either shell or solid.  

     

    Also. I tried your method.  But, after clicking 'offset' button, E_boundary was not created (Nothing happened).

     

    Thank you.

     

     

    <?xml version="1.0" encoding="UTF-8"?>4grains_with Grainboundary_indicated_by_white.png

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited February 2018

    That's simpler with shell.

    Just create external surface for each solid component.