Contact surfaces

[Sadeqkiwan]

I have couple of questions regarding contact surfaces
1.i saw a video that create step for make contact,and in order to make contact between the two surfaces he displace one to the other and after that when he reach the apply force step he deactivate this displacement, so my question,do we need to displace object to make contacts and why he deactivate this in the apply fore step, since this will remove contacts.

2. in the same question, when we display the contact pressure we notice that there is pressure, but how can this be created without reaching the apply force step,also no friction was defined so how can this be?

3. why we use tie contacts. is it for the same purpose as displace one part to another? i cant say?

 

[StefCon]

Hi,

1) Displacing parts/surfaces results in faster convergence. After the surfaces made contact, the force can be applied instead.

2) If you force surfaces together, the pressure to counteract the displacement is created. Think of the displacement as a force with the displaced outcome.

3) Tie contacts are like glue. They bind *quote needed on this one* nodes together within a certain tolerance.


Hope it helps,
S