i have a rectangular cube modeled with 3 20-node hex elements (picture attached). i need to perform guyan reduction at the nodes G1 to G12. how do i perform this analysis in nx9? can some1 please list all steps in detail ? thank you.
Select the DOF that you want to reduce to into the a-set. This is done via ASET bulk data entries.
See Section 10.3 of the User's Guide.
This is done on the Bulk Data tab of the Solution dialog. Create a DOF Set to use as the A-Set:
The size of the matrix that is solved (look for 4157 message) would be different with and without the a-set reduction
The Users Guide is in the NX Nastran documentation. If this is a bundled NX installation, see the NX docs and navigate to CAE, NX Nastran, NX Nastran User's Guide.
NX Nastran documentation is also available online at: