June 15, 2023 at 10:53 pmcheng089413Subscriber
Did anyone know whether this note about the contact would be an issue?
I created several pure penalty bonded contacts with Cohesize zone model. The target and contact are with same material. I found the notes in the solution output for each of the bonded contact. Some of them have the warning message as below.
*** NOTE *** CP = 35.582 TIME= 14:19:13
Symmetric Deformable- deformable contact pair identified by real
constant set 272 and contact element type 272 has been set up. The
companion pair has real constant set ID 273. Both pairs should have
the same behavior.
*WARNING*: ANSYS has found the contact pairs have similar mesh patterns
which can cause overconstraint. ANSYS will deactivate the current
pair and keep its companion pair.
Contact algorithm: Penalty method
Contact detection at: Gauss integration point
Contact stiffness factor FKN 1.0000
The resulting initial contact stiffness 0.13257E+13
Default penetration tolerance factor FTOLN 0.10000
The resulting penetration tolerance 0.13341E-02
Default opening contact stiffness OPSF will be used.
Default tangent stiffness factor FKT 1.0000
Default elastic slip factor SLTOL 0.50000E-02
The resulting elastic slip tolerance 0.46082E-04
Update contact stiffness at each iteration
Default Max. friction stress TAUMAX 0.10000E+21
Average contact surface length 0.92163E-02
Average contact pair depth 0.13341E-01
Average target surface length 0.73704E-02
Default pinball region factor PINB 0.25000
The resulting pinball region 0.33354E-02
Initial penetration/gap is excluded.
Bonded contact (always) with debonding is defined.
*** NOTE *** CP = 35.582 TIME= 14:19:13
Max. Initial penetration 3.797587245E-13 was detected between contact
element 135148 and target element 135355.
I have attached the settings of one of the bonded contact and all others are the same.
Appreciate if someone can provide any advice on this.
June 17, 2023 at 12:46 amcheng089413Subscriber
Hi community, does anyone have any ideas about this? thank you！😉
June 19, 2023 at 1:43 pmAshish KumarForum Moderator
The warning message indicates that there are 2 pairs depicting the same behavior and Ansys is deactivating one of the pair which should be fine.
June 19, 2023 at 6:15 pmcheng089413Subscriber
Hello Ashish, thank you!
I double checked the model and did not find any replicately defined contact pairs between same surface.
What may cause this warning message? I am curious...
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