I am trying to perform a stability analysis in order to prevent any "buckling" risk in the anti-vibration mass that we are designing. It consists of a large concrete block (2.4x2.4x1 m^3) laid on a 5-10 cm polymeric elastic medium with a low elastic constant. However, we do not want to get closer to the buckling condition when we move our weights on the antivibration platform.
I have simulated pretty well with elmer our eigenmodes and their frequency to design the absorber layer, nevertheless, I am not able to interpret the results when I introduce the stability analysis in the Eigen solutions. I have understood that for the stability analysis I have to prestress the system and therefore I have introduced a load on one specific node with the syntax below in the .sif input file
Boundary Condition 2
Target Nodes(1) = Integer 755 (node number)
Displacement 3 Load = Real -5000.0 (a load of about 500 kg - this I have taken from a reply in the forum )
End
I would expect a critical value for the applied load and a set of possible modes. I get some results but I have few ideas on how to interpret the output eigen modes and the .vtu output file that I get.
Are you aware of an example available on stability analysis with Elmer?
Is there a definitive manual to learn some secrets of Elmer?
Thank You for any help
Carlo.
Linera elasticity stability analysis
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Re: Linera elasticity stability analysis
You did not state which solver you are using.
http://www.nic.funet.fi/pub/sci/physics/elmer/doc/
is the documentation
6.2.2 Modal, harmonic and stability analysis, chapter 6
http://www.nic.funet.fi/pub/sci/physics/elmer/doc/
is the documentation
6.2.2 Modal, harmonic and stability analysis, chapter 6
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- Posts: 2237
- Joined: 25 Jan 2019, 01:28
- Antispam: Yes
Re: Linera elasticity stability analysis
In the github for the source code there are many test cases which can be used as a tutorial.
https://github.com/ElmerCSC/elmerfem/tr ... s/buckling
This one is stability analysis
https://github.com/ElmerCSC/elmerfem/tr ... s/buckling
This one is stability analysis