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Shell to Solid Coupling ISSUE...please help

Shell to Solid Coupling ISSUE...please help

Shell to Solid Coupling ISSUE...please help

(OP)
Hi guys,

I've experinced some difficulties in probing the SHELL TO SOLID COUPLING feature.

I have a thin plate (S8R5 elements) with a stiff edge (C3D20R) under a large displacements analysis.  The  quadratic continuum elements and shell ones are alligned on the common edge, hence there's no reason there is a gap.

It's a very simple issue, but I couldnt solve it, although I went through the manual and some examples. I have defined the SOLID surface which is easily displayed in CAE, but when I define the element-based shell surface, with no matter which edge identifier I use, ONLY the EDGE parallel to the SOLID - SHELL intersection line, opposite to the intersection (along the elements that define the shell-surface) is displayed.

Would anyone explain this to me? I ran the job with this wrong (I believe is wrong) shell-surface and get some errors like:  

***WARNING: SHELL NODE 2091 INSTANCE SHELL-1 MET THE POSITION TOLERANCE FOR Shell To Solid Coupling BUT NO COUPLING NODES WERE FOUND. INCREASING THE VALUE OF THE Influence Distance MAY BE NEEDED.

***ERROR: NO COUPLING CONSTRAINTS WERE DEFINED FOR Shell To Solid Coupling CONSTRAINT NAME CONSTRAINT-1. INCREASING THE VALUE OF THE Influence Distance MAY BE NEEDED.

There is no reason to believe I have to impose an Influence Distance. I have used the same card formats as in online doc, but no change in the error messages.

I would appreciate any help...

Regards,

Jm

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