Design Study Terminated Abnormally When using contact interfaces

[rbrooks]

I am currently fining Creo simulate totally unusable due to errors where the "Design Study Terminated Abnormally".

The cause of these errors appears to be a contact inteface on a washer. Without this everything is fine, with it the study terminates.

The advice I have been given so far by PTC is to carry out the study without contact interfaces. Which totally misses the point, without contact interfaces in this study the results are totally inaccurate and the whole excercise is a waste of time.

I have tried re creating the washer and the assembly but still get back to the same problem.

Does anyone have any ideas about how to resolve this please?

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[osenbore]

It may be that having the washer defined with a contact interface means that the Solver 'sees' the washer as having rigid motion in some degrees of freedom.

If the washer is defined as Contact with everything else around it, and "Infinite friction" is not checked in any of the contact definitions, then its likely that the washer can move rigidly in some degrees of freedom and the solver does not like that.

You can turn on the "Infinite friction" checkbox in order to alleviate this. Note that Infinite friction does not add infinite friction into your model, it just tells the Solver that that particular contact interface should not slide. If Creo experiences a foce that wants it to slide, it will report back to you the value of that force.

Hope this helps.

[sdensberger]

This is most likely the cause. You can also create some ground springs with very low stiffness that connect to the washer in order to prevent the rigid body motion.

[gkoch]

Hello Richard,

have you been able to solve the issue - and if yes, would you share your knowledge?

Otherwise do you want to upload the model as has been suggested?

(it is possible when you switch to Use advanced editor)

Gunter