3D parametered geometry

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Michele  Guizzetti

Michele Guizzetti

June 23, 2009 11:58am UTC

3D parametered geometry

Hi,
I have to simulate a 3D cantilever for different thickness values.
Is it possible to create a simulation where I make a thickness sweep or a Matlab script where I can change the thickness value?
Thanks

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Anders Westerberg

Anders Westerberg
COMSOL Employee
Sweden

June 23, 2009 1:57pm UTC in response to Michele Guizzetti

Re: 3D parametered geometry


Hi,
I have to simulate a 3D cantilever for different thickness values.
Is it possible to create a simulation where I make a thickness sweep or a Matlab script where I can change the thickness value?
Thanks


Hi Michele,

Yes, it is indeed possible to perform geometric parametric sweeps with COMSOL Multiphysics. Most conveniently, with the CAD Import Module's bidirectional interfaces to SolidWorks and Autodesk Inventor you can do this directly in COMSOL's graphical user interface. Alternatively, using the MATLAB interface you can save your COMSOL Multiphysics model (for any thickness value in the range of interest) as a model M-file, and then edit this file to use the thickness as a parameter to sweep over.

Best regards,
Anders Westerberg
COMSOL AB


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Ed Fontes

Ed Fontes
COMSOL Employee
Sweden

June 24, 2009 9:11am UTC in response to Michele Guizzetti

Re: 3D parametered geometry


Hi,
I have to simulate a 3D cantilever for different thickness values.
Is it possible to create a simulation where I make a thickness sweep or a Matlab script where I can change the thickness value?
Thanks


Dear Michele,

In this case, I think the better approach is to use COMSOL's built-in ALE technology for parametrization of the geometry. The reason for this is that you are only changing the thickness of the beam, which I hope does not lead to topology changes in the model domain. You can do this directly in the GUI without the use of any external packages.

Below you will find a link with a PowerPoint-file and an mph-file exemplifying how this is done in COMSOL.

Best regards,

Ed

-------------------------------------------
Ed Fontes
COMSOL
ed@comsol.com

-------------------------------------------
cds.comsol.com/mg/64a41e8b238394.zip
Estimated size: 8.2 MB
This link expires July 1, 2009. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------


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Ian Braly

Ian Braly

June 25, 2009 10:45pm UTC in response to Ed Fontes

Re: 3D parametered geometry

Dear Ed,

I have found your I-beam model to be very helpful, and I have a couple of questions regarding the parametric segregated solver that you outlined in your PowerPoint presentation.

I am trying to apply the moving mesh method from your model to my own. The error that is occurring when I attempt to solve my model is error number 7720: "All variables solved for must be treated in at least one segregated solver step." This message is not very clear to me, and I was wondering if you could shed some light on the subject.

As background information, the model has one subdomain. This subdomain is a cylinder (2D axially symmetric geometry). The model is using three multiphysics application modes. The application modes are Moving Mesh, Convection and Diffusion, and Electrostatics. I would like to parameterize the height of the cylinder.

I have attached my model to this message.

Thanks for your help,

Ian

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Ed Fontes

Ed Fontes
COMSOL Employee
Sweden

July 1, 2009 6:21pm UTC in response to Ian Braly

Re: 3D parametered geometry

Dear Ian,

Thank you for comments. The model was done by Bjorn Sjodin at our Boston office.
As you probably know, you are using the segregated solver to solve the problem. The segregated solver divides the solution process into several steps, where different sets of dependent variables are solved in the different steps. You need to have all dependent variables (that you have selected to solve for) represented in the different steps in the "Solver Parameters" dialog.

For example, if you have an application mode with two dependent variables, u and v, and you do the following:

1. Specify in the "Solver Manager", in the "Solve For" tab, that you want to solve for both variables (this is the default behavior)
2. You then select the segregated solver in the "Solver Parameters"

then both u and v need to represented in at least one "Segregated group".

If you only have u in the "Components" edit fields, then COMSOL will send you the error message that you are referring to. In other words, COMSOL tries to tell you (in a cryptic way I have to admit) that it cannot find the solver settings for v.

Best regards,

Ed

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Johan Gustafsson

Johan Gustafsson

November 13, 2009 2:45pm UTC in response to Ed Fontes

Re: 3D parametered geometry

Hi,

This example file on parametrization of geometry sounds very interesting. Is it possible to upload it once more.

Thanks,
Johan



Hi,
I have to simulate a 3D cantilever for different thickness values.
Is it possible to create a simulation where I make a thickness sweep or a Matlab script where I can change the thickness value?
Thanks


Dear Michele,

In this case, I think the better approach is to use COMSOL's built-in ALE technology for parametrization of the geometry. The reason for this is that you are only changing the thickness of the beam, which I hope does not lead to topology changes in the model domain. You can do this directly in the GUI without the use of any external packages.

Below you will find a link with a PowerPoint-file and an mph-file exemplifying how this is done in COMSOL.

Best regards,

Ed

-------------------------------------------
Ed Fontes
COMSOL
ed@comsol.com

-------------------------------------------
cds.comsol.com/mg/64a41e8b238394.zip
Estimated size: 8.2 MB
This link expires July 1, 2009. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------


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Johan Gustafsson

Johan Gustafsson

November 13, 2009 2:45pm UTC in response to Ed Fontes

Re: 3D parametered geometry

Hi,

This example file on parametrization of geometry sounds very interesting. Is it possible to upload it once more.

Thanks,
Johan



Hi,
I have to simulate a 3D cantilever for different thickness values.
Is it possible to create a simulation where I make a thickness sweep or a Matlab script where I can change the thickness value?
Thanks


Dear Michele,

In this case, I think the better approach is to use COMSOL's built-in ALE technology for parametrization of the geometry. The reason for this is that you are only changing the thickness of the beam, which I hope does not lead to topology changes in the model domain. You can do this directly in the GUI without the use of any external packages.

Below you will find a link with a PowerPoint-file and an mph-file exemplifying how this is done in COMSOL.

Best regards,

Ed

-------------------------------------------
Ed Fontes
COMSOL
ed@comsol.com

-------------------------------------------
cds.comsol.com/mg/64a41e8b238394.zip
Estimated size: 8.2 MB
This link expires July 1, 2009. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------


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Michele  Guizzetti

Michele Guizzetti

November 13, 2009 3:02pm UTC in response to Johan Gustafsson

Re: 3D parametered geometry

Dear Johan,
here is the file

Regards
Michele

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Anders Westerberg

Anders Westerberg
COMSOL Employee
Sweden

November 13, 2009 3:10pm UTC in response to Johan Gustafsson

Re: 3D parametered geometry

Hi Johan,

I uploaded the files again. You can retrieve them by clicking on the link below.

Best regards,
Anders Westerberg
COMSOL AB

-------------------------------------------
cds.comsol.com/mg/e4afd75dddaad7.zip
Estimated size: 8.2 MB
This link expires November 20, 2009. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------

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Alexandra Gualdino

Alexandra Gualdino

February 19, 2010 7:25pm UTC in response to Anders Westerberg

Re: 3D parametered geometry

Is it possible to upload the files again?

Thanks in advance,
Alexandra


Hi Johan,

I uploaded the files again. You can retrieve them by clicking on the link below.

Best regards,
Anders Westerberg
COMSOL AB

-------------------------------------------
cds.comsol.com/mg/e4afd75dddaad7.zip
Estimated size: 8.2 MB
This link expires November 20, 2009. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------


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Anders Westerberg

Anders Westerberg
COMSOL Employee
Sweden

February 19, 2010 10:54pm UTC in response to Alexandra Gualdino

Re: 3D parametered geometry

Hi Alexandra,

Sure. You find the link below.

Best regards,
Anders W

-------------------------------------------
cds.comsol.com/mg/34b7f163387624.zip
Estimated size: 8.2 MB
This link expires February 26, 2010. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------




Is it possible to upload the files again?

Thanks in advance,
Alexandra


Hi Johan,

I uploaded the files again. You can retrieve them by clicking on the link below.

Best regards,
Anders Westerberg
COMSOL AB

-------------------------------------------
cds.comsol.com/mg/e4afd75dddaad7.zip
Estimated size: 8.2 MB
This link expires November 20, 2009. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------



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Sarah Suck

Sarah Suck

March 2, 2010 12:41pm UTC in response to Anders Westerberg

Re: 3D parametered geometry

Hi Anders,

unfortunately I missed by a couple of days the latest upload of your parametrization presentation which I find really intersting. Could you please upload it once again?

Thanks in advance,
Best regards,
Sarah.



Hi Alexandra,

Sure. You find the link below.

Best regards,
Anders W

-------------------------------------------
cds.comsol.com/mg/34b7f163387624.zip
Estimated size: 8.2 MB
This link expires February 26, 2010. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------




Is it possible to upload the files again?

Thanks in advance,
Alexandra


Hi Johan,

I uploaded the files again. You can retrieve them by clicking on the link below.

Best regards,
Anders Westerberg
COMSOL AB

-------------------------------------------
cds.comsol.com/mg/e4afd75dddaad7.zip
Estimated size: 8.2 MB
This link expires November 20, 2009. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------




Reply  |  Reply with Quote  |  Send private message  |  Report Abuse

Anders Westerberg

Anders Westerberg
COMSOL Employee
Sweden

March 2, 2010 12:52pm UTC in response to Sarah Suck

Re: 3D parametered geometry

Hi Sarah,

No problem at all. Here is a fresh URL.

Best regards,
Anders


-------------------------------------------
cds.comsol.com/mg/34b8d090bda2fc.zip
Estimated size: 8.2 MB
This link expires March 9, 2010. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_by_Moving_Mesh.ppt
- Parameterized_I_Beam_Reset.mph
-------------------------------------------




Hi Anders,

unfortunately I missed by a couple of days the latest upload of your parametrization presentation which I find really intersting. Could you please upload it once again?

Thanks in advance,
Best regards,
Sarah.



Hi Alexandra,

Sure. You find the link below.

Best regards,
Anders W

-------------------------------------------
cds.comsol.com/mg/34b7f163387624.zip
Estimated size: 8.2 MB
This link expires February 26, 2010. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------




Is it possible to upload the files again?

Thanks in advance,
Alexandra


Hi Johan,

I uploaded the files again. You can retrieve them by clicking on the link below.

Best regards,
Anders Westerberg
COMSOL AB

-------------------------------------------
cds.comsol.com/mg/e4afd75dddaad7.zip
Estimated size: 8.2 MB
This link expires November 20, 2009. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------





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Anders Westerberg

Anders Westerberg
COMSOL Employee
Sweden

March 2, 2010 12:52pm UTC in response to Sarah Suck

Re: 3D parametered geometry

Hi Sarah,

No problem at all. Here is a fresh URL.

Best regards,
Anders


-------------------------------------------
cds.comsol.com/mg/34b8d090bda2fc.zip
Estimated size: 8.2 MB
This link expires March 9, 2010. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_by_Moving_Mesh.ppt
- Parameterized_I_Beam_Reset.mph
-------------------------------------------




Hi Anders,

unfortunately I missed by a couple of days the latest upload of your parametrization presentation which I find really intersting. Could you please upload it once again?

Thanks in advance,
Best regards,
Sarah.



Hi Alexandra,

Sure. You find the link below.

Best regards,
Anders W

-------------------------------------------
cds.comsol.com/mg/34b7f163387624.zip
Estimated size: 8.2 MB
This link expires February 26, 2010. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------




Is it possible to upload the files again?

Thanks in advance,
Alexandra


Hi Johan,

I uploaded the files again. You can retrieve them by clicking on the link below.

Best regards,
Anders Westerberg
COMSOL AB

-------------------------------------------
cds.comsol.com/mg/e4afd75dddaad7.zip
Estimated size: 8.2 MB
This link expires November 20, 2009. Please make sure to download before that date.

Included files:
- Parameterized_I_Beam_Reset.mph
- Parameterized_I_Beam_by_Moving_Mesh.ppt
-------------------------------------------





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Micaela Maiali

Micaela Maiali

April 1, 2010 8:59am UTC in response to Anders Westerberg

Re: 3D parametered geometry

Hi Anders,

I'm Micaela. I also have problems in the study of geometric parameterization. would help me see your parametrization presentation which I find really intersting. Could you please upload it once again?

Thanks in advance,
Best regards,
Sarah.

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April 1, 2010 9:29am UTC in response to Micaela Maiali

Re: 3D parametered geometry

It is publicly available here:
www.comsol.com/showroom/gallery/4743/

Niklas Rom
COMSOL AB

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