Gantry-Crane with Pin Joints ?

• Dec 23, 2019

• #2

FEA way

Mechanical

Nov 13, 2018

5,183

PL

Actually there’s more than one way to create such hinge joint between beam elements in Abaqus. One method is to add a wire between the nodes, create connector section (join type) and assign it to the wire. Another option is to use equation constraint that will couple translations of both nodes. And finally you could do it with MPC type PIN.

 

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• Dec 23, 2019

• Thread starter
• #3

yassou

Mechanical

Mar 13, 2015

69

FR

Hi FEA way
Thanks for Reply.

FEA way said:

Actually there’s more than one way to create such hinge joint between beam elements in Abaqus. One method is to add a wire between the nodes, create connector section (join type) and assign it to the wire.

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My whole model is one part (not separated parts), Therefore there is no 2 nodes between 2 wires, it's just a common Node (Red node) between them.

FEA way said:

Another option is to use equation constraint that will couple translations of both nodes.

Click to expand...

Same before, There is no 2 Nodes, It's one common Node, If there is 2 Node then can you explain more?

FEA way said:

And finally you could do it with MPC type PIN.

Click to expand...

Same Problem, There is no 2 Nodes, It's one common Node.
With Best Regards.
yassou.

 

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• Dec 23, 2019

• #4

FEA way

Mechanical

Nov 13, 2018

5,183

PL

If it’s modeled as a single part then the connection will behave like welded by default (same as with tie constraint). To create pinned joint you need two separate nodes for each joint so you would have to divide the frame into 3 separate parts (horizontal beam and 2 columns).

 

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• Dec 23, 2019

• Thread starter
• #5

yassou

Mechanical

Mar 13, 2015

69

FR

FEA way said:

To create pinned joint you need two separate nodes for each joint so you would have to divide the frame into 3 separate parts (horizontal beam and 2 columns).

Click to expand...

Now If I don't want to divide the frame into 3 parts, Is there any options to separate One common Node (Red Node) To two separate nodes ?

 

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• Dec 23, 2019

• #6

FEA way

Mechanical

Nov 13, 2018

5,183

PL

Partitions won’t help here since they will result in a single node at the joint anyway. Thus it seems that the only option is to use Merge/Cut Instances (selecting Cut of course).

 

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