Can Optistruct define a part to be rigid?
Altair EmployeeI know it can use RBE2 to let the part to be rigid.
But if today I want this component to be rigid.
Can I let the part to be rigid and not use the MPC method
I also have a question. My ram is 16GB and I use it to run, it will have the error.
*** ERROR # 3401 ***
System does not have enough memory available for MUMPS solver. MUMPS needs
addtional 64328 MB. Please use a computer with bigger physical RAM.
Can I use less ram to run? I set the-maxlen
and it also failed
Answers
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Hi
did you use RBODY keyword?
why did you have to change solver type to MUMPS?
-maxlen is to limit memory for solver usage, it cannot increase your ram to 64G
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@tinh Thanks to your apply.
I have tried RBODY, my process is set>set element, Creat>rigid body>Elements set. It will error and I didn't set any property and material of my part.
At the second problem of the MUMPS because at this time my solution method is Non-linear quasi-static
and I have also tried maxlen and I also set the PARAM>HASHASSM>yes, but it still error.
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You have to assign property and material for those elements
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what is the error?
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So why don't you let it deformable and constraint all its nodes by RBE2?
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please constraint all its nodes by rbe2 and rerun
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Altair Forum User said:
Because I want it to be rigid body
So I just constraint it's bolt hole for RBE2.
But what is the use-case?
This may not give proper results.
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@tinh Thanks for your reply. I will try it.
@Prakash Pagadala I use the part to contact with other part.
And one part is the rigid other is elastic material.
And the rigid part have the 4 bolt hole, I just give the 4 bolt RBE2.
My analysis at run it doen't have error, but it doesn't run finish.
So I need to use the @tinh method to constrain all nodes to be RBE2 to rerun?
If I choose 3 parts it will show the error and just only a part will have 128937 nodes.
Here I have a model and how should I constrain this 2 part to be rigid.
After that, can I use the high young's modulus to define the rigid body in non-linear quasi-static analysis?
If my material original young's modulus is 210 GPa, I modify to 210 E^15 Pa.
Really thanks.
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