Abaqus 6.11 - How to Create a Pin

[MechRM]

Hello everybody, I'm an Abaqus Beginner and i already read everything about this thing on the ''help'' but i can't resolve my problem.

I have to simulate a pin between two rigid body (100mm beam and 80mm beam), how can I do?

Thanks for your collaboration, it's very important for me.

Bye

 

[IceBreakerSours]

Go to Interaction module, then go to Create Connector Section, select MPC and MPC Type Pin. Next, create a wire feature between the two rigid body reference nodes, and then assign the MPC Type Pin section to the wire feature you just created.

http://www.eng-tips.com/faqs.cfm?fid=376

http://www.eng-tips.com/faqs.cfm?fid=1083

 

[MechRM]

So I will have a model like this :

X WIRE(MPC) X

 

[MechRM]

And then I've to apply a Constraint???

 

[IceBreakerSours]

I've to apply a Constraint?

Yes and no.

Yes: Appropriate degrees of freedom at the rigid body reference nodes must be constrained. Otherwise, the model will not even begin to converge.

No: MPC PIN itself is a constraint. Read the Analysis User's Manual.

http://www.eng-tips.com/faqs.cfm?fid=376

http://www.eng-tips.com/faqs.cfm?fid=1083

 

[MechRM]

Ok, consider the entire mechanism is like this :

DEFORMABLE BEAM 1 - RIGID BEAM (RP1) - PIN - RIGID BEAM (RP2) - DEFORMABLE BEAM 2 - SLIDER (RP3)

I have create MPC constraint like you say, now i apply ''constraints'' :

Rigid Body\Tie : Node of DB1 --- Reference Point RP1

Rigid Body\Tie : 1 Node of DB2 --- Reference Point RP2

Rigid Body\Tie : Other 1 Node of DB2 --- Reference Point RP3

Then I add the BCs : ENCASTRE of other node of DB1, U2=UR3=0 of RP3

Right?

 

[IceBreakerSours]

At a first glance, it looks okay to me. Having said that, only you can be the judge of whether what you are doing makes sense or not.

http://www.eng-tips.com/faqs.cfm?fid=376

http://www.eng-tips.com/faqs.cfm?fid=1083

 

[MechRM]

only you can be the judge of whether what you are doing makes sense or not.

The analysis is completed, in my opinion it's exactly how I expected it; now I've to let see to my chief to confirm it.

Thank you very much

If there are any problems I'll wrote here

 

[MechRM]

I use this thread to introduce an evolution of my problem; now I have to create two pins in this mechanism :

FLEXIBLE BEAM (encastred) - Beam 100mm (RP1) - PIN - Beam 80mm (RP2) - Pin - Slider (RP3, only x axis movement)

I tried to use MPC Pin between RP1/RP2 and then MPC Pin between RP2/RP3, it works but the results are absolutely wrong..

How can I do?

Thanks