| E5061 | WARNING: E5061 | DDAM MINIMUM MODAL EFFECTIVE MASS NOT ACHIEVED |
| Cause: | In MODAL solutions, when DDAM analysis is performed, the minimum required modal effective mass percentage as specified on the DDAMDAT Bulk Data entry (modal mass cutoff percentage) was not achieved. | |
| Action: | Increase the number of modes requested on the EIGRL Bulk Data entry, or lower the modal mass cutoff percentage on the DDAMDAT Bulk Data entry. | |
| Remarks: | See Autodesk Nastran Reference Guide, Section 4, Bulk Data, for entry format. |