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Re: meshing error

March 7, 2011, 10:01 pm
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Hi

with such a symmetric geometry you are better off working only in 1 quadrant (1/4 or even 1/8) of the geometry and then revolve your system or work with mirror operations. Also with such thin features you must mesh rather dense to avoid that the elements inter penetrates.

Also you should put a cylinder all around your fine model.

Finally I would use a sphere as external air boundary, and not a cube, you have less corners

--
Good luck
Ivar
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Re: meshing error

September 1, 2011, 11:43 pm
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0
0

Hi

I have noticed this error when I mesh complex domains, particularly those with topology looping around an object (torus like).
My way around is to:
1) cut the domain into simpler parts and mesh by sections
2) mesh edges or faces around critical region
3) start from centre outwards, and start with parts containing details in fine mesh then use coarser mesh around

Mostly I get around like that, sometimes I must cut further my geometry into smaller parts, by adding internal boundaries

Note: use latest version, the mesher handler is one of the features improving with the new releases

--
Good luck
Ivar


Hi everybody,
I've got this problem: "Failed to respect boundary element edge on geometry face".
I've imported the geometry in a CAD format and it's quite complex.
I decided to convert the geometry into COMSOL format, before making 'Form Union'.
I meshed all the boundaries, playing with the element sizes and toggling between General Physics/Fluid Dynamics/Plasma.
However, when I try to mesh the volumes, COMSOL gives me the error message that I stated above.
Should I edit the CAD geometries? Isn't there any other solution to get around this?
I thought that, once the external boundaries of an object was meshed, I was pretty straightforward to mesh its inside!
Thanks for any help!
Prisca
↧
↧

Meshing Error! "Failed to respect boundary element edge on geometry face!"

September 1, 2011, 11:44 pm
$
0
0

Hi

I have noticed this error when I mesh complex domains, particularly those with topology looping around an object (torus like).
My way around is to:
1) cut the domain into simpler parts and mesh by sections
2) mesh edges or faces around critical region
3) start from centre outwards, and start with parts containing details in fine mesh then use coarser mesh around

Mostly I get around like that, sometimes I must cut further my geometry into smaller parts, by adding internal boundaries

Note: use latest version, the mesher handler is one of the features improving with the new releases

--
Good luck
Ivar


Hi everybody,
I've got this problem: "Failed to respect boundary element edge on geometry face".
I've imported the geometry in a CAD format and it's quite complex.
I decided to convert the geometry into COMSOL format, before making 'Form Union'.
I meshed all the boundaries, playing with the element sizes and toggling between General Physics/Fluid Dynamics/Plasma.
However, when I try to mesh the volumes, COMSOL gives me the error message that I stated above.
Should I edit the CAD geometries? Isn't there any other solution to get around this?
I thought that, once the external boundaries of an object was meshed, I was pretty straightforward to mesh its inside!
Thanks for any help!
Prisca
↧

Re: Meshing Error! "Failed to respect boundary element edge on geometry face!"

September 2, 2011, 10:19 am
$
0
0
Hi

normally COMSOL tells you on which face/edge Id it fails, locate the items and try a manual meshing of the face or edge first then et COMSOl continue, often it works out. If this is for several edges/faces, you must iterate trough all until you have a correct mesh.

Defeaturing is often easier in the CAD, be sure holes/bolts threads ... , fillets and champfers are reduced to a minimum in the CAD BEFORE you load it into COMSOL

--
Good luck
Ivar
↧

meshing error

March 7, 2011, 8:08 am
$
0
0
hi,
i got following error several times with different models while meshing.
'failed to respect boundary element on geometry edge'.
may i know the reason behind this?
↧
↧

Re: meshing error

March 7, 2011, 9:00 am
$
0
0
Hi

I have noticed this error when I mesh complex domains, particularly those with topology looping around an object (torus like).
My way around is to:
1) cut the domain into simpler parts and mesh by sections
2) mesh edges or faces around critical region
3) start from centre outwards, and start with parts containing details in fine mesh then use coarser mesh around

Mostly I get around like that, sometimes I must cut further my geometry into smaller parts, by adding internal boundaries

Note: use latest version, the mesher handler is one of the features improving with the new releases

--
Good luck
Ivar
↧

Re: meshing error

March 7, 2011, 1:41 pm
↧

Re: meshing error

March 7, 2011, 5:04 pm
$
0
0
I tried to make the modifications mentioned.But the same problem still persists.I am attaching the model with this post.It would really be helpful to get some help on the same.Best regards,Thanks in advance.
↧
Search

Re: meshing error

March 8, 2011, 4:01 am
$
0
0
Hi

with such a symmetric geometry you are better off working only in 1 quadrant (1/4 or even 1/8) of the geometry and then revolve your system or work with mirror operations. Also with such thin features you must mesh rather dense to avoid that the elements inter penetrates.

Also you should put a cylinder all around your fine model.

Finally I would use a sphere as external air boundary, and not a cube, you have less corners

--
Good luck
Ivar
↧
↧

Re: meshing error

September 2, 2011, 5:43 am
$
0
0

Hi

I have noticed this error when I mesh complex domains, particularly those with topology looping around an object (torus like).
My way around is to:
1) cut the domain into simpler parts and mesh by sections
2) mesh edges or faces around critical region
3) start from centre outwards, and start with parts containing details in fine mesh then use coarser mesh around

Mostly I get around like that, sometimes I must cut further my geometry into smaller parts, by adding internal boundaries

Note: use latest version, the mesher handler is one of the features improving with the new releases

--
Good luck
Ivar


Hi everybody,
I've got this problem: "Failed to respect boundary element edge on geometry face".
I've imported the geometry in a CAD format and it's quite complex.
I decided to convert the geometry into COMSOL format, before making 'Form Union'.
I meshed all the boundaries, playing with the element sizes and toggling between General Physics/Fluid Dynamics/Plasma.
However, when I try to mesh the volumes, COMSOL gives me the error message that I stated above.
Should I edit the CAD geometries? Isn't there any other solution to get around this?
I thought that, once the external boundaries of an object was meshed, I was pretty straightforward to mesh its inside!
Thanks for any help!
Prisca
↧

Meshing Error! "Failed to respect boundary element edge on geometry face!"

September 2, 2011, 5:44 am
$
0
0

Hi

I have noticed this error when I mesh complex domains, particularly those with topology looping around an object (torus like).
My way around is to:
1) cut the domain into simpler parts and mesh by sections
2) mesh edges or faces around critical region
3) start from centre outwards, and start with parts containing details in fine mesh then use coarser mesh around

Mostly I get around like that, sometimes I must cut further my geometry into smaller parts, by adding internal boundaries

Note: use latest version, the mesher handler is one of the features improving with the new releases

--
Good luck
Ivar


Hi everybody,
I've got this problem: "Failed to respect boundary element edge on geometry face".
I've imported the geometry in a CAD format and it's quite complex.
I decided to convert the geometry into COMSOL format, before making 'Form Union'.
I meshed all the boundaries, playing with the element sizes and toggling between General Physics/Fluid Dynamics/Plasma.
However, when I try to mesh the volumes, COMSOL gives me the error message that I stated above.
Should I edit the CAD geometries? Isn't there any other solution to get around this?
I thought that, once the external boundaries of an object was meshed, I was pretty straightforward to mesh its inside!
Thanks for any help!
Prisca
↧

Re: Meshing Error! "Failed to respect boundary element edge on geometry face!"

September 2, 2011, 4:19 pm
$
0
0
Hi

normally COMSOL tells you on which face/edge Id it fails, locate the items and try a manual meshing of the face or edge first then et COMSOl continue, often it works out. If this is for several edges/faces, you must iterate trough all until you have a correct mesh.

Defeaturing is often easier in the CAD, be sure holes/bolts threads ... , fillets and champfers are reduced to a minimum in the CAD BEFORE you load it into COMSOL

--
Good luck
Ivar
↧

meshing error

March 7, 2011, 2:08 am
$
0
0
hi,
i got following error several times with different models while meshing.
'failed to respect boundary element on geometry edge'.
may i know the reason behind this?
↧
↧

Re: meshing error

March 7, 2011, 3:00 am
$
0
0
Hi

I have noticed this error when I mesh complex domains, particularly those with topology looping around an object (torus like).
My way around is to:
1) cut the domain into simpler parts and mesh by sections
2) mesh edges or faces around critical region
3) start from centre outwards, and start with parts containing details in fine mesh then use coarser mesh around

Mostly I get around like that, sometimes I must cut further my geometry into smaller parts, by adding internal boundaries

Note: use latest version, the mesher handler is one of the features improving with the new releases

--
Good luck
Ivar
↧

Re: meshing error

March 7, 2011, 7:41 am
↧
Search

Re: meshing error

March 7, 2011, 11:04 am
$
0
0
I tried to make the modifications mentioned.But the same problem still persists.I am attaching the model with this post.It would really be helpful to get some help on the same.Best regards,Thanks in advance.
↧

Re: meshing error

March 7, 2011, 10:01 pm
$
0
0
Hi

with such a symmetric geometry you are better off working only in 1 quadrant (1/4 or even 1/8) of the geometry and then revolve your system or work with mirror operations. Also with such thin features you must mesh rather dense to avoid that the elements inter penetrates.

Also you should put a cylinder all around your fine model.

Finally I would use a sphere as external air boundary, and not a cube, you have less corners

--
Good luck
Ivar
↧
↧

Re: meshing error

September 1, 2011, 11:43 pm
$
0
0

Hi

I have noticed this error when I mesh complex domains, particularly those with topology looping around an object (torus like).
My way around is to:
1) cut the domain into simpler parts and mesh by sections
2) mesh edges or faces around critical region
3) start from centre outwards, and start with parts containing details in fine mesh then use coarser mesh around

Mostly I get around like that, sometimes I must cut further my geometry into smaller parts, by adding internal boundaries

Note: use latest version, the mesher handler is one of the features improving with the new releases

--
Good luck
Ivar


Hi everybody,
I've got this problem: "Failed to respect boundary element edge on geometry face".
I've imported the geometry in a CAD format and it's quite complex.
I decided to convert the geometry into COMSOL format, before making 'Form Union'.
I meshed all the boundaries, playing with the element sizes and toggling between General Physics/Fluid Dynamics/Plasma.
However, when I try to mesh the volumes, COMSOL gives me the error message that I stated above.
Should I edit the CAD geometries? Isn't there any other solution to get around this?
I thought that, once the external boundaries of an object was meshed, I was pretty straightforward to mesh its inside!
Thanks for any help!
Prisca
↧

Meshing Error! "Failed to respect boundary element edge on geometry face!"

September 1, 2011, 11:44 pm
$
0
0

Hi

I have noticed this error when I mesh complex domains, particularly those with topology looping around an object (torus like).
My way around is to:
1) cut the domain into simpler parts and mesh by sections
2) mesh edges or faces around critical region
3) start from centre outwards, and start with parts containing details in fine mesh then use coarser mesh around

Mostly I get around like that, sometimes I must cut further my geometry into smaller parts, by adding internal boundaries

Note: use latest version, the mesher handler is one of the features improving with the new releases

--
Good luck
Ivar


Hi everybody,
I've got this problem: "Failed to respect boundary element edge on geometry face".
I've imported the geometry in a CAD format and it's quite complex.
I decided to convert the geometry into COMSOL format, before making 'Form Union'.
I meshed all the boundaries, playing with the element sizes and toggling between General Physics/Fluid Dynamics/Plasma.
However, when I try to mesh the volumes, COMSOL gives me the error message that I stated above.
Should I edit the CAD geometries? Isn't there any other solution to get around this?
I thought that, once the external boundaries of an object was meshed, I was pretty straightforward to mesh its inside!
Thanks for any help!
Prisca
↧

Re: Meshing Error! "Failed to respect boundary element edge on geometry face!"

September 2, 2011, 10:19 am
$
0
0
Hi

normally COMSOL tells you on which face/edge Id it fails, locate the items and try a manual meshing of the face or edge first then et COMSOl continue, often it works out. If this is for several edges/faces, you must iterate trough all until you have a correct mesh.

Defeaturing is often easier in the CAD, be sure holes/bolts threads ... , fillets and champfers are reduced to a minimum in the CAD BEFORE you load it into COMSOL

--
Good luck
Ivar
↧
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