*HEADING
 COMPLEX EIGENSOLVER FOLLOWING STEADY STATE TRANSPORT ANALYSIS
 USES DEPENDENCY FILE:  pcfreq_sst_axi
*restart, write, freq=100
*SYMMETRIC MODEL GENERATION,REVOLVE,NODEOFF=250,ELEMENT=250
*SURFACE      ,NAME= SURF_SIDE2
 352, S5
 602, S5
*SURFACE      ,NAME= SURF_SIDE1
 352, S3
 602, S3
*NODE, NSET=NPAD1
*NODE, NSET=REFNODE1
*ELEMENT, TYPE=R3D4, ELSET=ELPAD1
*NODE, NSET=NPAD2
*NODE, NSET=REFNODE2
*ELEMENT, TYPE=R3D4, ELSET=ELPAD2
*SURFACE, NAME=SURF_PAD1
 ELPAD1, SPOS
*SURFACE, NAME=SURF_PAD2
 ELPAD2, SNEG
*nset, nset=n703
*SURFACE, NAME=SURF_nod703, type=node
*RIGID BODY, REFNODE=REFNODE1, ELSET=ELPAD1
*RIGID BODY, REFNODE=REFNODE2, ELSET=ELPAD2
*CONTACT PAIR, INTERACTION=ROTOR_PAD
 SURF_SIDE1, SURF_PAD1
 SURF_SIDE2, SURF_PAD2
*SURFACE INTERACTION, NAME=ROTOR_PAD
*FRICTION
 0.0,
*BOUNDARY
 NFIX1, 1,3
 NFIX2, 1,3
 REFNODE1, 1,2
 REFNODE1, 4,6
 REFNODE2, 1,2
 REFNODE2, 4,6
*****************************
*STEP, INC=100, NLGEOM
 ESTABLISH CONTACT
*STATIC
 1., 1.0
*BOUNDARY
 REFNODE1, 3,3,  0.05
 REFNODE2, 3,3, -0.05
*OUTPUT, FIELD, FREQ=10
*NODE OUTPUT
 U,
*END STEP
*STEP, INC=100, NLGEOM
*STEADY STATE TRANSPORT
*CHANGE FRICTION, INTERACTION=ROTOR_PAD
*FRICTION
 0.3,
*TRANSPORT VELOCITY
 NROTOR, 2.5
*OUTPUT, FIELD, FREQ=10
*NODE OUTPUT
 U,
*CONTACT OUTPUT
 CSTRESS,CDISP
*ELEMENT OUTPUT
 S,
*END STEP
**
*STEP
 REAL EIGENSOLVER
*FREQUENCY
 12,
*OUTPUT, FIELD
*NODE OUTPUT
 U,RF
*ELEMENT OUTPUT
 S,
*END STEP
**
*STEP
 COMPLEX EIGENSOLVER
*COMPLEX FREQUENCY
*SELECT EIGENMODES, GENERATE
*END STEP