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Distinguished Contributor
madg1
Posts: 108
Registered: ‎03-16-2012

suggestion reg mesh size

128 Views, 3 Replies
07-11-2012 07:52 AM

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?

 

madg1
ASIMM 2012
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Contributor
Petr.Krysl
Posts: 18
Registered: ‎07-05-2012

Re: suggestion reg mesh size

07-11-2012 08:34 AM in reply to: madg1

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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Employee
INACTIVE_AstroJohn
Posts: 492
Registered: ‎03-25-2010

Re: suggestion reg mesh size

07-11-2012 08:55 AM in reply to: Petr.Krysl

Or use plate elements.

Sincerely,
John Holtz, P.E.
Senior User Experience Designer, Simulation
Autodesk, Inc.

Current version of Mechanical & Multiphysics: 2013 SP1 (2013.01.00.0012 28-Jun-2012)
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Distinguished Contributor
madg1
Posts: 108
Registered: ‎03-16-2012

Re: suggestion reg mesh size

07-11-2012 10:56 AM in reply to: INACTIVE_AstroJohn

john

 

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

madg1
ASIMM 2012
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