CONTACT PROBLEM

[PeterBeePL]

Hi all,
I am working on a contact problem on a something reminding a wire rope (1 core with 1 wire, 5 strands with 1 wire).I am using contact wizard to create contact pairs. Every wires have been meshed with solid 92 (i am making 5 pairs of Target170 and Conta174 using contact wizard -surface to surface). The first end of this wire rope is fixed and the second has displacement along its axis.(Geometry is imported from IGES files). When i am trying to solve it, after few iterations, in first substep i receive a following message:

*** WARNING *** CP = 697.623 TIME= 11:18:03
Contact element 33454 (real ID 4) status changes abruptly from contact (with target element 30732) -> no-contact.

The effect is that each strand penetrates thru the core.
Someone can tell me why does it happen?

In *.err file i found a following message:

*** WARNING *** SUPPRESSED MESSAGE CP = 14.401 TIME= 11:23:04
Some entities requested in the *VGET were undefined.

(there were few of them)
I noticed that they appeared after switching on Contact Manager, before using contact wizard and picking contact pairs.
PSEASE HELP, I'm novice in ANSYS.

I also want to add that when i am trying to solve the same problem in the same way with 1 core and 1 strand and it works.

 

[ansysfreak]

Dear

How many substep do you take?
Looks like something in your model is not well connected.
Do you get any results? And can you plot them?

Regards
Garry

 

[kemechial]

Hi,

As I figure it out, you only apply boundary condition (fixed end) and displacement load to the center wire. And which type of contact do you apply? (bonded, frictionless, ...) The error, I suppose might be possibly due to boundary conditions or to the type on contact.