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Singularity in the assembly

Singularity in the assembly

Singularity in the assembly

(OP)
Another easy question.  My model is as follows.  I have a bolt  fixed at both ends (nut and bolt head.  the bolt goes through a whole in a plate.  The whole is bigger than the bolt shaft. (the bolt and plate are two different parts)  When I run the model I get a warning message in the .msg file that says the following

"solver problem.  Numerical singularity when processing node 5 (ASSEMBLY) D.O.F. 1 ratio: 6.7117E+14"

Two questions.  The first is what is the ratio talking about? It is a huge number.  The second is what does (assembly) mean?  I only have two part and the node isn't specified on either one of these parts so how would I find node 5 in (assembly)?

Thanks for the help

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