CAD import and meshing error

May 9, 2011, 7:57 am

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

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0

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Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

---

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 8:12 am

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72

CAD import and meshing error

May 9, 2011, 1:57 pm

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

≪ Previous: How does COMSOL create its mesh on imported CAD geometries?

$

0

0

Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 2:12 pm

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72

CAD import and meshing error

May 9, 2011, 7:57 am

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

≪ Previous: How does COMSOL create its mesh on imported CAD geometries?

$

0

0

Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 8:12 am

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72

CAD import and meshing error

May 9, 2011, 1:57 pm

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

≪ Previous: How does COMSOL create its mesh on imported CAD geometries?

$

0

0

Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 2:12 pm

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72

---

CAD import and meshing error

May 9, 2011, 7:57 am

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

≪ Previous: How does COMSOL create its mesh on imported CAD geometries?

$

0

0

Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 8:12 am

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72

CAD import and meshing error

May 9, 2011, 1:57 pm

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

≪ Previous: How does COMSOL create its mesh on imported CAD geometries?

$

0

0

Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 2:12 pm

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72

CAD import and meshing error

May 9, 2011, 7:57 am

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

≪ Previous: How does COMSOL create its mesh on imported CAD geometries?

$

0

0

Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 8:12 am

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72

CAD import and meshing error

May 9, 2011, 1:57 pm

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

≪ Previous: How does COMSOL create its mesh on imported CAD geometries?

$

0

0

Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

---

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 2:12 pm

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72

CAD import and meshing error

May 9, 2011, 7:57 am

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

≪ Previous: How does COMSOL create its mesh on imported CAD geometries?

$

0

0

Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 8:12 am

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72

CAD import and meshing error

May 9, 2011, 1:57 pm

≫ Next: How does COMSOL create its mesh on imported CAD geometries?

≪ Previous: How does COMSOL create its mesh on imported CAD geometries?

$

0

0

Hi everyone,

I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the meshing no longer works! Either, it fails to mesh a face of the structure or I get "internal error with code 900". Furthermore, the problem is that, if I get my complicated model, and make a union in Rhino, COMSOL fails to import the geometry all in all!

I have been rebuilding my CAD-model, so that all the surfaces and solids would be well-defined.

Therefore, I would like to ask for some help in importing .sat-files to COMSOL. Anyone has experience on it?

And, what could be the error in the meshing process?


Henna

How does COMSOL create its mesh on imported CAD geometries?

December 20, 2012, 2:12 pm

≫ Next: CAD import and meshing error

≪ Previous: CAD import and meshing error

$

0

0

Dear community,

I am trying to import geometrical models of the human body to build a virtual man in COMSOL based on the free BodyParts3D database. The database supplies every piece of a human body as a high resolution .obj file, which I convert to STL or IGES (works a lot better during import than STL) for import to COMSOL.

My question is now:
These imported IGES-structures are a mesh already (see Abbildung 1 in the attachment). Some elements are not of high quality but I am not intending to modify the millions of mesh cells in the source material (Abb. 2). What I do want to change/modify is how COMSOL handles these source meshes for its internal mesh calculation. Instead of filling the whole structure with mesh cells to approximate the original shape, it seems to sub-mesh the source mesh cells. This drastically increases the amount of mesh cells in my models (Abb. 3 and Abb. 6).

Is there any best-practice guide on how to import meshed CAD models without "sub-meshing" all source elements? See my sphere example in the attachment (Abb. 4-6). What am I doing wrong in the import workflow that the sphere gets meshed in such a strange way? If the workflow is not working for a simple sphere already, it is obvious that the whole body model is nearly useless.


Best regards,
Thomas

P.S.: Unfortunately I get a "file extension error" during upload (I already remove any non-alphabetical characters), so I had to upload my PDF attachment here:
gigamove.rz.rwth-aachen.de/download/id/GskCsSL4RnAW72