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3D parametered geometry
Posted 23.06.2009, 07:58 GMT-4 17 Replies
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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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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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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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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
Attachments:
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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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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
-------------------------------------------
Please login with a confirmed email address before reporting spam
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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here is the file
Regards
Michele
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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
-------------------------------------------
Please login with a confirmed email address before reporting spam
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
-------------------------------------------
Please login with a confirmed email address before reporting spam
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
-------------------------------------------
Please login with a confirmed email address before reporting spam
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
-------------------------------------------
Please login with a confirmed email address before reporting spam
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
-------------------------------------------
Please login with a confirmed email address before reporting spam
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
-------------------------------------------
Please login with a confirmed email address before reporting spam
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.
Please login with a confirmed email address before reporting spam
Please login with a confirmed email address before reporting spam
Can you please send me the link. My work is also related to the moving mesh ale method for a 3D geometry. I am facing problem in increasing the thickness using ale method.
Thanks
Best Regards
Sandeep
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The Introduction to COMSOL Multiphysics manual, version 5.1, illustrates how to parametrize a COMSOL geometry.
Best regards,
Jeff
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