Why is a large deflection prestressed modal with CORIOLIS,ON giving incorrect results
in ANSYS 10.0?

This analysis requires PSOLVE,ELFORM, but this is error trapped with NLGEOM,ON, so it
isn't possible. It won't be necessary to issue PSOLVE,ELFORM in ANSYS 11.0 [Ref: Defect 38868]
A workaround for 10.0 is to specify NROPT,UNSYM in the static analysis to force the writing
of the coriolis matrix.

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