**
**  Frequency extraction step using AMS
**
*HEADING
Extract eigenmodes including residual modes using AMS
**
**  Model data for BIW
**
*INCLUDE, input=biw_modeldata.inp
***-------------------------------------------------------------------------
**  STEP 1 - Eigenfrequency extraction 
***-------------------------------------------------------------------------
*STEP
*FREQUENCY, EIGENSOLVER=AMS, NSET=savenodes, NORM=MASS, DAMPING PROJECTION=ON, RESIDUAL MODES
,,225.0
mnt2, 3
mnt7, 3
**
*RESTART, WRITE, FREQUENCY=1
*OUTPUT, FIELD
*NODE OUTPUT, NSET=output
U
*END STEP
**