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f06 Warning - TURN OFF CONCIDENCE NODE CHECKING IN THE CONTACT SURFACE REGIONS.

Pioneer
Pioneer

Hi All

I am recieveing this warning in the f06 file

################################################################################

*** W A R N I N G ***

 

 CONTACT GROUP NUMBER=       100

 

 SOME CONTACT NODES BELONG TO CONTACTOR AND TARGET IN THE SAME PAIR.

 THIS FREQUENTLY RESULTS FROM NODAL COINCIDENCE CHECKING DURING MESH GENERATION.

 IN THIS CASE, TURN OFF CONCIDENCE NODE CHECKING IN THE CONTACT SURFACE REGIONS.

 

  1. Node= 3331 belongs to surface          1 and surface          2
  2. Node= 3183 belongs to surface          1 and surface          2
  3. Node= 3184 belongs to surface          1 and surface          2
  4. Node= 3185 belongs to surface          1 and surface          2
  5. Node= 3329 belongs to surface          1 and surface          2
  6. Node= 3172 belongs to surface          1 and surface          2
  7. Node= 3330 belongs to surface          1 and surface          2
  8. Node= 3209 belongs to surface          1 and surface          2
  9. Node= 3173 belongs to surface          1 and surface          2
  10. Node= 3174 belongs to surface          1 and surface          2

  ...

################################################################################

I have never heard of "concidence".

Is this a Typo?

Should it be "Coincidence Node Checking"?

Can anyone explain what this message means and where I can find the parameter please?

regards

Paul

1 REPLY

Re: f06 Warning - TURN OFF CONCIDENCE NODE CHECKING IN THE CONTACT SURFACE REGIONS.

Valued Contributor
Valued Contributor

I think you have a contact region and for some reason you have merged the nodes before you have create the contact region in this case some nodes belong to both target and slave surface. These nodes will behave like spot welds and you will get high stress sesults in these points. If you don't want this turn off coincident nodes checking in contact surface regions.

 

Best Regards

AMinati