Element Type - Beam / Rod / Tie

Numerical methods and mathematical models of Elmer
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JamesMarine
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Element Type - Beam / Rod / Tie

Post by JamesMarine »

I am a new user to ElmerFEA and i am now trying to find out an alternative software NASTRAN. It seems Elmer is among the best open source FEA software avaiable.

Just one question, do ElmerFEA support Beam/Rod element similar to NASTRAN? I found the below page on line:
http://feacompare.com/sortbyprice.html which said that such elements are not avaialble in Elmer. Just wondering whehter this is true and if it will be a problem for me since these elements types are needed for my analysis. If these elements are not supported in Elmer, is that any alternative ways to use my NASTRAN model (bdf file) for analysis?
kevinarden
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Re: Element Type - Beam / Rod / Tie

Post by kevinarden »

For an open source code similar to NASTRAN I would suggest CalculiX.
mika
Posts: 231
Joined: 15 Sep 2009, 07:44

Re: Element Type - Beam / Rod / Tie

Post by mika »

Hi,

Elmer has a very basic solver for elastic beams (the lowest-order approximation for the Timoshenko model).

-- Mika
JamesMarine
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Re: Element Type - Beam / Rod / Tie

Post by JamesMarine »

Thanks, did this mean that i will somehow be able to convert a nastran bdf file to an Elmer file for solve purpose (if only elastic problem is studied)?
JamesMarine
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Re: Element Type - Beam / Rod / Tie

Post by JamesMarine »

kevinarden wrote: 11 Jul 2019, 11:17 For an open source code similar to NASTRAN I would suggest CalculiX.
Thanks, but CalculiX is not fitted with FSI feature and Acoustic feature. That may also be need for my future projects. Considering all my needs: FSI, Acoustic, Windows version, non-linear contact. It seems Elmer is my best choice.
mika
Posts: 231
Joined: 15 Sep 2009, 07:44

Re: Element Type - Beam / Rod / Tie

Post by mika »

JamesMarine wrote: 11 Jul 2019, 14:09 Thanks, did this mean that i will somehow be able to convert a nastran bdf file to an Elmer file for solve purpose (if only elastic problem is studied)?
No, I just meant that native Elmer input files can be used to define a beam simulation within Elmer. Model import from Nastran into Elmer files has not been considered.
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