I seem to be finding all the weird errors this week.

Running an analysis on a shell model I am getting the error for insufficiently constrained bodies.

However everything looks pretty constrained, I have tried this both with the global bonding and local bonding for the problem areas. Neither works.

Checking the model with the unconstrained body checker and also running an analysis with soft springs active shows the same parts are moving freely.

The mesh looks like these parts have continuity on the webs (though not the flanges) but I would have thought that would only be the case if the contacts were working?

Any thoughts? Thanks

Drew