Re: New to Dream 3D - Create custom rectangular prism

Michael Jackson

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Jun 1, 2017, 10:37:16 AM6/1/17

to Jesse Feng, dream3d-users

Dear Jesse,
Use the latest version of DREAM.3D and load up the "Prebuilt
Pipelines->Workshop->Synthetic->(01) Single Cubic Phase Equiaxed"
pipeline. (Just double click the bookmark). After the pipeline loads
(May take about 5 seconds or so) click on the "Initialize Synthetic
Volume" filter (Should be #2 filter) and changed the "Dimensions"
parameter to be 300, 300, 100 and the resolution to 0.3, 0.3, 0.3 and
then run the pipeline. View the .xdmf file using ParaView. I think this
is what you are after.

Mike Jackson

Jesse Feng wrote:
> Hello all,
>
> I inherited the attached file and several other ones from a previous
> student working on this project. To start, I would like to create a 3D
> rectangular prism (the attached is a cube). I read some of the tutorials
> and familiarized myself with creating models from actual scanned
> materials, but how would I be able to create a custom one of random
> grains? I aim to generate a similar VTK file for this.
>
> Any tips would be greatly appreciated.
>
> Thanks!
>
> Jesse
>
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Screen Shot 2017-06-01 at 10.36.35 AM.png

Jesse Feng

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Jun 1, 2017, 9:07:07 PM6/1/17

to Michael Jackson, dream3d-users

Awesome, thanks!

On Jun 1, 2017 10:37, "Michael Jackson" <mike.j...@bluequartz.net> wrote:

Dear Jesse,
Use the latest version of DREAM.3D and load up the "Prebuilt Pipelines->Workshop->Synthetic->(01) Single Cubic Phase Equiaxed" pipeline. (Just double click the bookmark). After the pipeline loads (May take about 5 seconds or so) click on the "Initialize Synthetic Volume" filter (Should be #2 filter) and changed the "Dimensions" parameter to be 300, 300, 100 and the resolution to 0.3, 0.3, 0.3 and then run the pipeline. View the .xdmf file using ParaView. I think this is what you are after.

Mike Jackson

Jesse Feng wrote:

Hello all,

I inherited the attached file and several other ones from a previous
student working on this project. To start, I would like to create a 3D
rectangular prism (the attached is a cube). I read some of the tutorials
and familiarized myself with creating models from actual scanned
materials, but how would I be able to create a custom one of random
grains? I aim to generate a similar VTK file for this.

Any tips would be greatly appreciated.

Thanks!

Jesse

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Jesse Feng

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Jun 2, 2017, 4:28:40 PM6/2/17

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Hi Michael,

I managed to generate the shape and it contains grains of random grain sizes. Is there a way to control how big the grains are?

Thanks!

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Jesse Feng

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Jun 2, 2017, 4:48:44 PM6/2/17

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Adding to the previous message. I am aware of how to change the grain sizes. I am asking mainly on whether I can precisely indicate a certain size at a certain location.

Thanks!

Michael Jackson

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Jun 2, 2017, 4:56:07 PM6/2/17

to Jesse Feng, dream3d-users

You can control the sizes pretty tightly but NOT where those grains show
up. This is an often requested feature but is non-trivial to implement.
I would encourage anybody in the community who is working on such an
algorithm to consider donating the codes to the DREAM.3D project.

Thanks

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Jesse Feng

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Jul 10, 2017, 12:31:30 PM7/10/17

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Hi Michael,

I have transitioned into using primary features instead of developed grains to complete my project. The advantage is that Dream 3D can actually output the goal attributes and the input is simply a reordered version of the output. The benefit is that the primary phase file contains the seeds of the grains instead of the grains themselves. One of the main challenges that I am facing is how to generate natural looking grain boundaries from existing grains, and using the primary phases solve that problem.

I want to ask what is "phase"? I have created cubes of various grain sizes but the output goal attribute file for them all have phase = 1.

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Michael Jackson

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Jul 13, 2017, 3:22:12 PM7/13/17

to Jesse Feng, dream3d-users

A "Phase" is the Materials Science definition of a Phase.

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