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Different types of connectors

Altair Forum User

Hello,

my question may seem to be simple but I don't really understand the difference between all these types of connectors. I mean, when you say for example RBE2 or RBE3 you know what will be the behaviour of the dependent nodes, but it's a bit difficult for me to see the idea of bolt/area and other types existing in HM. Maybe you have some document that explains it clearly? I am sorry if such a document exists and I did not search attentively.

Thank you

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Altair Forum User

Hi Alina,

Please go through https://altairuniversity.com/wp-content/uploads/2012/04/HM_1D_Extract.pdf and https://altairuniversity.com/wp-content/uploads/2013/05/HTC2012_Connector_Training.pdf which are documents on connectors.

Altair Forum User

Tnank you, it's clear.

I have another question : I'd like to allow only the OZ displacements between these two parts, what would be the appropriate solution?

image.png.c0b78b12e7c30d880bfdb6ea47eda7f1.png

Altair Forum User

Hi Alina,

You can fix one component and enforce an imposed displacement to the other component in Z direction.

Which solver are you using?

Altair Forum User

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

And once the rigid connector is created, how can I modify it? For example, I dont want dof 6 anymore.

Rahul Rajan_21763

Use update subpanel to update DOF.

I think you have to use 2 rbe3, one binds nodes on ring and one on shaft.,

Then use a cbush to bind 2 slave nodes

by release dof on cbush you can get solution

Or assign ring nodes to cylindal system and add constraints but this makes it stiffer

Do you run NLGEOM?

There is contact definition that may help constrain 2 parts

Altair Forum User

I think you have to use 2 rbe3, one binds nodes on ring and one on shaft.,

Then use a cbush to bind 2 slave nodes

Thank you, its a simple and elegant solution and it works perfectly !

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