How can I import NASTRAN mass and stiffness matrices into ANSYS 10.0?

The format of DMIG entry is very simple. You have a node number, a dof number (Tx,Ty,`,Rz) and a value.
Starting from wrtsub.F (source file provided in ANSYS distribution ANSYS_DIR/customize/misc/),
you can write an executable that translates a NASTRAN superelement into an ANSYS .sub file.

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