AutoContact produces repeating contact pairs and contact surfaces ?

LIMING LI_21655

Hi everyone,

In my model, the volume were detached by several walls by means of "3D > detach > detach from wall". Then I need to define contacts along the walls. However,  I found that there were repeating contact pairs and contact surfaces when I used the "AutoContact" to automatically create contacts.

So how to use this function correctly to get the right contact pairs and contact surfaces?

Thanks advanced.

 

These are the volumes detached by the walls.

 

This is he dialog I checked when I Create AutoContact.

 

Obviously, there are repeated contact pairs and contact surfaces.

Viraj Kulkarni_21218

Liming,

Can you delete all contacts surfaces and groups- and then recreate using autocontact.

You might have created them multiple times maybe?

Your final result should look like this image- with 4 contact surfaces and 2 groups.

PS: its better to detach elements, just using the first detach option. Do it for 1 component and then do same for another one. If you do this for 2/3 components you should be all set. (instead of doing detach from wall-then you need wall elements)

LIMING LI_21655

Viraj Kulkarni_21218 said:

Liming,

Can you delete all contacts surfaces and groups- and then recreate using autocontact.

You might have created them multiple times maybe?

Your final result should look like this image- with 4 contact surfaces and 2 groups.

PS: its better to detach elements, just using the first detach option. Do it for 1 component and then do same for another one. If you do this for 2/3 components you should be all set. (instead of doing detach from wall-then you need wall elements)

Hi,

Thanks for your help.

I'm sure that I did the "AutoContact" only once.

When I created it again, I deleted the contact surfaces and pairs created before.

So I don’t know why there are repeated contact surfaces and pairs.

As for the method of detaching elements, I use this method because I do have wall elements. And I have shown it on another issue. (https://community.altair.com/community?id=community_question&sys_id=7c1efa021bb06414c4dfdbd9dc4bcb98)

Liming