March 30, 2020 at 8:35 amadrian92Subscriber
I was searching for such problem here but did not find what I'm looking for. Basically I want to create a frictional contact between a solid a surface(shell). The case is simple, I heat up the solid and the shell plate, and the press with a force. I don't want to create a bonded contact, because I want to let the surface and solid to "slide" between each other because of the different thermal expansion level. If I make them bonded, they expand with the same magnitude of Directional Deformation, obviously. I think I might make some essential error....
Thank you in advance!
March 30, 2020 at 10:59 ampeteroznewmanSubscriber
Insert a Contact Tool into the Connections folder and Evaluate Initial Contact Status. Is the Frictional contact closed?
March 30, 2020 at 11:31 am
March 30, 2020 at 7:28 pmWenlongAnsys Employee
As Petersnowman suggested, checking the contact status is a good idea when you have an "unable to detect contact problem". Based on the image you shared, your two surfaces are not initially in contact. I would try reducing the "initial step" size and maybe also the minimum step size in the analysis settings, so that the movement within the first substep is not larger than the pinball region.
March 30, 2020 at 8:11 pmpeteroznewmanSubscriber
You can also try Adjust to Touch.
March 31, 2020 at 4:40 pmadrian92Subscriber
Thank you guys for tips! It worked actually with the Adjust to touch method. Contact is closed an it works both in symmetric and asymmetric contact. Now because I have different values of contact pressure I wonder what is the general rule of thumb - for symmetric contact is the net pressure AVG of both and for asymmetric is the true one, or opposite? I was looking for a kind of manual PDF of ansys contacts etc.
March 31, 2020 at 11:30 pmWenlongAnsys Employee
Here is the manual you are looking for:https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v201/en/ans_ctec/Hlp_ctec_dessurf.html?q=asymmetric%20contact.
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April 1, 2020 at 8:05 amadrian92Subscriber
Thank you Wenlong, thread to be closed.
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