Hi you all,

I do not really know of how to model something like this you can find attached;
The pipe I am studying enters into a furnace and has a shield not welded to it (but with a minimum gap between pipe and shield), so the pipe can slide through the shield and the shield itself can slide vertically and laterally. What I want to get in the output are the frictional forces due to movements of the pipe in this node in every axis FX, FY and FZ.

Could someone please give me some advise to make this?

Thanks in advance.

Regards.

It appears your sliding is pipe on steel plate. Try using a friction factor of .3.

Have a safe day.

Of course it is a pipe sliding on steel, and the friction factor steel-steel is 0.3 (nothing new with that)
But you know how to model this? I want to consider friction but without a restraint.

Thanks.

You can't do that. You have to define a restraint, and then you can indicate that there is friction (in a plane perpendicular to this restraint direction).

Then, There no way to do this with Caesar.

Thanks.

But you can't have friction unless the pipe is up against something - and that defines a restriant.

From what I can make out of the sketch, the "shield" appears to be there more as a crude seal rather than to provide any kind of meaningful restraint. In truth, it looks likes it is intended to pretty effectively allow free movement. As Richard is alluding to - you don't have an effective restraint in any of the three translations (and probably not much of one in rotation with the gaps involved) - so there's probably not much meaningful friction load to be concerned about.