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Nastran from FEM mode

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Newbie

Nastran from FEM mode

Why does Mechanica FEM mode restrain all solid element nodes in the
rotational degrees of freedom when exporting a Nastran deck? Usually this
hasn't caused me any problems, because Nastran solid elements don't
recognise rotational degrees of freedom, but as soon as I connect a beam to
a solid element node, the rotations at the beam end are restrained.
Checking this in integrated Mechanica indicates that the default in
integrated mode doesn't restrain beams ends at solid nodes. Why is this
the case for Nastran from FEM? Is there a setting that controls this?

Thanks in advance,

Ella Jobson