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suggestion reg mesh size

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Message 1 of 4
Anonymous
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suggestion reg mesh size

Anonymous
Not applicable

In my work, I am required to perform FEA on really long parts and assemblies.say 100 feet hollow square sections  with cross section width 50 inches.And the plate thickness would be 1 inch.so they are really long and thin parts.

Solid meshing is considered.

 

so my question is there any good rule of thumb to get right mesh size.How many elements would be good across thickness of the plate?

 

In the above example of cross section if I get min of 3 brick elements thick, the no. of elements would be enormosly large which my comp cannot deal.

 

any thoughts?

 

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suggestion reg mesh size

In my work, I am required to perform FEA on really long parts and assemblies.say 100 feet hollow square sections  with cross section width 50 inches.And the plate thickness would be 1 inch.so they are really long and thin parts.

Solid meshing is considered.

 

so my question is there any good rule of thumb to get right mesh size.How many elements would be good across thickness of the plate?

 

In the above example of cross section if I get min of 3 brick elements thick, the no. of elements would be enormosly large which my comp cannot deal.

 

any thoughts?

 

3 REPLIES 3
Message 2 of 4
Anonymous
in reply to: Anonymous

Anonymous
Not applicable

20-node bricks used with 2 x 2 x 2 quadrature deal with thin structures quite gracefully.  A single element through the thickness may well be enough.

 

Petr

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20-node bricks used with 2 x 2 x 2 quadrature deal with thin structures quite gracefully.  A single element through the thickness may well be enough.

 

Petr

Message 3 of 4
John_Holtz
in reply to: Anonymous

John_Holtz
Autodesk Support
Autodesk Support

Or use plate elements.



John Holtz, P.E.

Global Product Support
Autodesk, Inc.


If not provided already, be sure to indicate the version of Inventor Nastran you are using!

"The knowledge you seek is at knowledge.autodesk.com" - Confucius 😉
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Or use plate elements.



John Holtz, P.E.

Global Product Support
Autodesk, Inc.


If not provided already, be sure to indicate the version of Inventor Nastran you are using!

"The knowledge you seek is at knowledge.autodesk.com" - Confucius 😉
Message 4 of 4
Anonymous
in reply to: John_Holtz

Anonymous
Not applicable

john

 

as Petr mentioned, does so many number of solid elements along thickness doesn't matter much  reg sensitivity of results?

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john

 

as Petr mentioned, does so many number of solid elements along thickness doesn't matter much  reg sensitivity of results?

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