| G3036 | FATAL ERROR: G3036 | REFERENCE OR SUPPORT GRID POINT REQUIRED FOR INERTIAL RELIEF |
| Cause: | An inertial relief analysis was attempted (PARAM, INREL, ON or PARAM, INERTIALRELIEF, ON) without the specification of a reference grid point (PARAM, GRDPNT, grid id) or a support grid point (SUPORT Bulk Data entry). | |
| Action: | A single grid point must be specified about which the model can be fully constrained against rigid body motion. A SUPORT Bulk Data entry is normally used for this purpose. If a SUPORT is not specified, one will be generated automatically for all six degrees of freedom at the grid point specified by PARAM, GRDPNT or PARAM, GPWEIGHT. | |
| Remarks: | See Autodesk Nastran Reference Guide, Section 5, Parameters, for more information. |