How to control mesh quality

[pengfei shen]

Hello all

Is there any filter that can control the mesh quality? Thanks.

best

Pengfei

[Michael Jackson]

No. I would export the mesh and use an external tool to fix up the mesh.

 

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Mike Jackson

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[pengfei shen]

Could you please tell me which filter do you use to export the mesh and which tool to modify the mesh? Thanks.

Pengfei

[pengfei shen]

Hello MIke

What filter you use to export mesh and what tool you use to fix up mesh?

Thanks

Pengfei

在2021年10月15日星期五 UTC-6 上午7:32:29<mike.j...@bluequartz.net> 写道：

[Michael Jackson]

I know some users will use the Abaqus Hexahedron Exporter and then use Abaqus to modify their mesh as needed.

To view this discussion on the web visit https://groups.google.com/d/msgid/dream3d-users/97328c4f-93ff-4de0-a568-18f5955883afn%40googlegroups.com.

[pengfei shen]

Thanks for your reply. I know how to use the filter 'Abaqus Hexahedron Exporter'. But do you know how to use abaqus to modify the mesh?

Pengfei

[pengfei shen]

Hi Mike, my model is like below. This mesh is generated by the filter 'Abaqus Hexahedron Exporter'. One element corresponds one voxel. But there are too many elements, it would be very time-consuming to run this model. I hope one grain can be  composed of less elements, which is what I want to do. Do you know which filters in dream3d can do this? Or do you know there is other tool can do this? Thank you very much.

在2021年10月23日星期六 UTC-6 上午11:15:03<mike.j...@bluequartz.net> 写道：

[Michael Jackson]

Unfortunately I have no experience with Abaqus. Another outside developer wrote that filter and we relied on them for the testing.

 

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Mike Jackson

To view this discussion on the web visit https://groups.google.com/d/msgid/dream3d-users/26fb0568-de66-41d6-8198-c3ba343e7ac7n%40googlegroups.com.

[Michael Jackson]

This is a known problem with the filter. The output files can be so large Abaqus cannot import the model.

 

You could try and run the “Change Resolution” filter to let each voxel have a larger physical dimension. This will lower the number of voxels but may also remove small grains all together from the structure. What you really need to do is to be able to generate an Adaptative Mesh Refinement (AMR) solid mesh using one of the many tools available (both opensource and proprietary). DREAM3D cannot help in this regard. If you find something in python you could try joining the “dream3d-conda” package with those tools and see what happens.

 

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Mike Jackson

 

On 10/25/21, 4:44 PM, "pengfei shen" <dream3...@googlegroups.com on behalf of pshen...@gmail.com> wrote:

 

Hi Mike, my model is like below. This mesh is generated by the filter 'Abaqus Hexahedron Exporter'. One element corresponds one voxel. But there are too many elements, it would be very time-consuming to run this model. I hope one grain can be  composed of less elements, which is what I want to do. Do you know which filters in dream3d can do this? Or do you know there is other tool can do this? Thank you very much.

To view this discussion on the web visit https://groups.google.com/d/msgid/dream3d-users/3bd63581-df54-4ce6-bc2d-b6aa95a1da66n%40googlegroups.com.

[pengfei shen]

Thank you very much. Your suggestion is really helpful. I tried  “Change Resolution” filter. It works.