EIGRD

Bulk Data Entry Defines data required to perform eigenvalue extraction using the Lapack-based dense solver.

Format


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
EIGRD	`SID`	`V1`	`V2`	`ND`				`NORM`

Example


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
EIGRD		0.1	3.2	10

Definitions


Field	Contents	SI Unit Example
`SID`	Unique set identification number. No default (Integer > 0)
`V1`,`V2`	For vibration analysis: Frequency range of interest. Default = blank (`V1` < `V2`, Real, or blank)
`ND`	Number of roots desired. No default (Integer > 0 or blank)
`NORM`	Method used for eigenvector normalization. MASS Eigenvectors are normalized to the unit value of the generalized mass. MAX Eigenvectors are normalized to the unit value of the largest displacement in the analysis set. Default = MASS for normal modes analysis

Comments

For CMS residual runs, EIGRD is suitable for models with 20,000 degrees of freedom or lower.