How to merge the faces of 2 surface components under certain distance? (geometry files attached)
Hi all,
I have 2 components imported from 2 .stl files. And now 2 surfaces with many egdes have been generated from stl mesh. As we can see from the image below, in the up-right corner, some part the geometry was masked to show inner part of the geometry. And the 2 surface are crossing with each other, because physically they should share same boundary in that area.
I need to make the two geometry (red and blue)in the up-right corner part share same boundary. So I can generate the surfacemesh, and they can share the same elements on that boundary. Is there any way to merge the boundaries of 2 geometries when they are very close? Thank you.
Ke
Download:
Used version: Hypermesh 2017
Answers
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Try: Geom => edge edit => replace and play with "cleanup tolerance"
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Q.Nguyen-Dai said:
Try: Geom => edge edit => replace and play with "cleanup tolerance"
Thank you. I have tried the method, but what I want to do is merging 2 almost parallel surfaces together, not combining the 2 edges into 1. Is there any way to do that?
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By moving edge-1 of surface-1 to edge-2 of surface-2 then two surfaces were merged, right?
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Have a look at my test: two different surfaces with gap
Moving 1st edge to 2nd edge (TOL> gap)
Get the shared edge between two surfaces
Disable shared edge to get only one surface:
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Q.Nguyen-Dai said:
Have a look at my test: two different surfaces with gap
Moving 1st edge to 2nd edge (TOL> gap)
Get the shared edge between two surfaces
Disable shared edge to get only one surface:
Thank you for your detailed explanation. I am really sorry for not describing the problems clearly. The sketch is misleading, which is only a cut plane of our 3D model.
The two surfaces are all enclosed 3D surfaces (animal organ's 3D outline) and some parts of them are contacted or overlapped with each other physically. But they are from 2 different stl files and in hypermesh, the parts should be perfectly overlapped are now crossed with each other due to errors I think. I mean are there any ways to merge the "contacted part" of the two surfaces together to be one surface? Thanks a lot.
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ke zhang said:
Thank you for your detailed explanation. I am really sorry for not describing the problems clearly. The sketch is misleading, which is only a cut plane of our 3D model.
The two surfaces are all enclosed 3D surfaces (animal organ's 3D outline) and some parts of them are contacted or overlapped with each other physically. But they are from 2 different stl files and in hypermesh, the parts should be perfectly overlapped are now crossed with each other due to errors I think. I mean are there any ways to merge the "contacted part" of the two surfaces together to be one surface? Thanks a lot.
I can not help without shared model.
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Q.Nguyen-Dai said:
I can not help without shared model.
Please see the following simplified model. There are 2 surfaces inside the file.
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ke zhang said:
Please see the following simplified model. There are 2 surfaces inside the file.
I have a look at your models. It's very complicated with Hypermesh. No way to do quickly with Hypermesh. All should be done manually, so a lot of work.
Maybe there is other CAD software could do this task?
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Q.Nguyen-Dai said:
I have a look at your models. It's very complicated with Hypermesh. No way to do quickly with Hypermesh. All should be done manually, so a lot of work.
Maybe there is other CAD software could do this task?
Thank you very much. I will find other softwares to do the job. Maybe solidworks can solve the problem and then I can go back with hypermesh for the meshing part.
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Hello Ke Zhang,
Can you share again the model to see if I can help you please?
To make some automatic cleanup geometry you have different tools in HyperMesh as :
Geometry / Edge edit / Equivalence --> Make the replace and toogle operatin with many surfaces and is more automatic things than replace and toogle. Pay attention, the tolerance need to be very small compare to the entire model
Geommetry/Autocleanup --> you need to give parameter file and criteria file to prepar geometry for the mesh
If your both geometry are solid :
Geometry / Solid edit / Boolean
Best regards,
Arthur0 -
Arthur JANNOT_20986 said:
Hello Ke Zhang,
Can you share again the model to see if I can help you please?
To make some automatic cleanup geometry you have different tools in HyperMesh as :
Geometry / Edge edit / Equivalence --> Make the replace and toogle operatin with many surfaces and is more automatic things than replace and toogle. Pay attention, the tolerance need to be very small compare to the entire model
Geommetry/Autocleanup --> you need to give parameter file and criteria file to prepar geometry for the mesh
If your both geometry are solid :
Geometry / Solid edit / Boolean
Best regards,
ArthurHi Arthur,
Thank you so much for your help! This problem is big trouble for me.
Please download the file from the following link. I also restored the link in my question text.
The models are surfaces, one is not enclosed (modelout.iges), but you can add a surface to the
bottom of it to make it enclosed.
https://www.dropbox.com/s/1twiihmrgtxjww0/Model_Dropbox.7z?dl=0
Thanks a lot!
Ke
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ke zhang said:
Hi Arthur,
Thank you so much for your help! This problem is big trouble for me.
Please download the file from the following link. I also restored the link in my question text.
The models are surfaces, one is not enclosed (modelout.iges), but you can add a surface to the
bottom of it to make it enclosed.
https://www.dropbox.com/s/1twiihmrgtxjww0/Model_Dropbox.7z?dl=0
Thanks a lot!
Ke
Hello,
Thanks for the model. Due to the complexity of the surfaces generated, a lot of operations is necessary to rebuild geometry. I'm interested to see if we can work with another way by using mesh from stl. And maybe coupling HyperMesh with other softwares from Altair to help you.
Can you share me the initial stl file please? I would like to see if we can make operation on the stl mesh rather than geometry extraction.
Regards,
Arthur0
Altair Employee