How to make a contact object move with a constant velocity

[bridgehl]

Hi all,

I am modelling a cube sliding on a simple curved beam with a constant velocity by using a surface-to-surface contact pair.

I used to use successfully the command "D, NodeOfCube, UX (UZ), %XDISP1%" to move the cube with a constant velocity.

Now, I want to transfer the centrifugal force from the cube to the beam by applying the friction contact. Therefore, the above method seems unsuitable.

Is there any way to have the cube moved with constant velocity?

Thanks for your inputs.

 

[cbrn]

Hi,
the "thing" I have in mind may be a bit complicated, but might work:
- create a pilot node inside the cube and link the cube's nodes to this "representative"
- duplicate this pilot node with zero offset, and create a revolute joint ("ball joint") between these two. Let's call the cube's node "Nc" and the other one "NL1".
- create another node at an offset, in a position which is suitable to have your displacement law easily applied. Let's call it "NL2".
- duplicate "NL2" with zero offset, and create another "ball joint". Let's call the second node "NP".
- create a link between NL1 and NL2.
- apply the motion law to NP.

May it sound possible?

Regards

 

[bridgehl]

Thanks cbrn for your great help.

I will try modeling with your advices and let you know the results.

Regards,