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Fill Geometric gap

Posted 14.07.2011, 20:32 GMT-4 MEMS & Nanotechnology, MEMS & Piezoelectric Devices, Geometry Version 4.3 4 Replies

Michael Farnsworth
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Hi, probably a trivial question but it is an annoying problem for me.

I have a model essentailly made up of a number beams connected together and then 'union'ed together to form the whole and extruded into 3D.

The problem i have is that sometimes a smal,..sliver of a gap remainswhere some beams look to join which then leads to COMSOL throwing a fit in a number of places :).

Anyone happen to know of a way to get Comsol to fill the gap so to speak. I thought repair might work but it does not seem to do anything high or low value.

I attatched a small example pic.

Any help is appreciated.

Regards Mike F

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4 Replies Last Post 06.09.2014, 10:39 GMT-4
Tom Myers
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Posted: 1 decade ago 15.07.2011, 03:24 GMT-4
Mike,

If you are only interested in the final outside dimension (not the internal domains). Then I would extend the lower rectangle upwardsto cover the gap left by the other two shapes.

I would then form the union and then delete internal boundaries.

Regards,
Tom
Mike, If you are only interested in the final outside dimension (not the internal domains). Then I would extend the lower rectangle upwardsto cover the gap left by the other two shapes. I would then form the union and then delete internal boundaries. Regards, Tom
Michael Farnsworth
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Posted: 1 decade ago 15.07.2011, 08:46 GMT-4
Sadly I can't do this manually,

The design is essentially part of a stochastic design optimisation process, and as a result I have no control over the design.

Essentially the process overrides certain parameters of a default design to create a new one. I just wondered if Comsol had a process which could be called which might be able to 'repair' these little niggles :).

Regards MF
Sadly I can't do this manually, The design is essentially part of a stochastic design optimisation process, and as a result I have no control over the design. Essentially the process overrides certain parameters of a default design to create a new one. I just wondered if Comsol had a process which could be called which might be able to 'repair' these little niggles :). Regards MF
Tom Myers
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Posted: 1 decade ago 16.07.2011, 06:55 GMT-4
Hi,

Have you checked out the ConvertToSolid, ConvertToSurface, ConvertToCurve, ConvertToPoint functions. They are described in the COMSOL API documentation.

Tom
Hi, Have you checked out the ConvertToSolid, ConvertToSurface, ConvertToCurve, ConvertToPoint functions. They are described in the COMSOL API documentation. Tom
Mayank Dhull
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Posted: 1 decade ago 06.09.2014, 10:39 GMT-4
Hi,
I am working on Joule Heating module and designing a microheater.
I have a zig zag kind of geometry on which i want to deposit a layer. Now the problem is how to deposit that layer. It will be tedious to give coordinates at every curve. Is there any option where i can give the four coordinates of the corners and it will fill all the space in between these coordinates.
Seeking help.
Thanks
Hi, I am working on Joule Heating module and designing a microheater. I have a zig zag kind of geometry on which i want to deposit a layer. Now the problem is how to deposit that layer. It will be tedious to give coordinates at every curve. Is there any option where i can give the four coordinates of the corners and it will fill all the space in between these coordinates. Seeking help. Thanks

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