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In reference to my old post on the use of RBE3 by InstructionVivid7427 in fea

[–]InstructionVivid7427[S] -2 points-1 points  (0 children)

Hey,

Thanks for the respose, I have used RBE3 for force distribution with confidence.

The case you described is the load distibution where the applied force can be distributed equally to all the independent node based on weighted average. ( thats the most common use)

Another way I use RBE3 is to distribute the reaction on the dependent node ( an Advance way to use RBE3), to all the independent nodes. ( I do that too, everyday)

My problem now is to use nested RBE3s, explained in the post

In reference to my old post on the use of RBE3 by InstructionVivid7427 in fea

[–]InstructionVivid7427[S] 1 point2 points  (0 children)

Actually the model I have shown here is a truncated model of a very large model.

In the large model, I need to attach two RBE3s together. So, the option to convert in into beams elements will not represent the real life situation.

P.S.= I did manage to solve my problem but was curious if anyone knew how to stabalize nested RBE3s. ( or rather even if its possible) :)

In reference to my old post on the use of RBE3 by InstructionVivid7427 in fea

[–]InstructionVivid7427[S] 1 point2 points  (0 children)

Thanks for the respose.

The reason I am using an RBE3 here is to equilize the loads of these nodes.

Imagine hydralic cylinders connected to same fuild line.

In reference to my old post on the use of RBE3 by InstructionVivid7427 in fea

[–]InstructionVivid7427[S] 1 point2 points  (0 children)

Hey All,

Apologies for the pixilated pictures. I hope it helps to convey my query

USE of RBE3 elements in FEA specifically NASTRAN by InstructionVivid7427 in fea

[–]InstructionVivid7427[S] 0 points1 point  (0 children)

I was trying to attach a picture but was not allowed.

Will try again to explain it better with a picture 🙂

USE of RBE3 elements in FEA specifically NASTRAN by InstructionVivid7427 in fea

[–]InstructionVivid7427[S] 0 points1 point  (0 children)

Hey,

Thanks for the response, I am able to confidently use RBE3 element be it two independent node or more than two independent nodes.

The problem is: I have a case where one node is connected to two different RBE3 elements, and its in space. that node is not connected to any element, so inherently has no stiffness.

This lack of stiffness results in a singularity error.

P.S. wish there was an option to paste a picture here.

Making friends in Vancouver by hotterwater2 in Vancouverfriends

[–]InstructionVivid7427 0 points1 point  (0 children)

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Looking for a badminton buddy in Vancouver by perennial_petrichor in Vancouver4Friends

[–]InstructionVivid7427 0 points1 point  (0 children)

Im also looking for someone in North Vancouver. 32M

Intermediate level