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Contact output variables in Abaqus

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My question is about contact output variables in Abaqus and differences between them.

I need to find what part of my model is in contact, to do that I use CSTATUS(visualisation) and CPRESS(visualisation & node values) variables. I can simply vizualize this output.

The problem is with CNAREA variable, in visualisation module(scale 1:1) at the some stage of my analysis there IS NO contact between pairs, CSTATUS=0 and CPRESS=0 in my whole model, but CNAREA is not zero.

I thought that if there is no any contact CNAREA should be equal to zero too, but it isnt.

Where is the problem?

Thank You!