Learning Forum

[malbaro]

Warning : contact status has experienced an abrupt change .nAfter this warning the problem does not converge at all. I have looked up this issue, and was recommended to use sub steps to gradually apply the loads. nContact type : FrictionlessnThe thing is the problem converges if the applied force does not cause the contacts to separate, but it will throw this warning and does not converge if the applied force is significant to cause the separation. nAny solutions ? How do I use sub steps ? or is there any other Analysis or contact settings I need to be aware of ?n

[Aniket]

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For substeps, please check:

simple check would be are there other things that keep the model together if the frictional contact is open? Do a Modal analysis first with the frictional contact suppressed and see if the model is adequately constrained in the contact open case.

-Aniket

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[Ladderdale]

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That could indicate that your model is unconstrained or that one of your contacts are open

Insert contact tool and check if any of the are open. You can right click on any contact and a click on " go to selected item in tree"

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[joecui]

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Hi! Do you solved this issue right now? I'm facing the same problem now. Could you share the experiment how you solved this problem ?

-Joe

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