*HEADING
 STRAIGHT LINE ROLLING WITH MATERIAL HISTORY EFFECTS INCLUDED. 
 C3D8RH elements, pressure stress relaxation
 USES DEPENDENCY FILE:  a
*RESTART,WRITE,FREQ=100
*NODE,NSET=NROAD
 1, 0.0, 0.0, 0.5
*SYMMETRIC MODEL GENERATION,REVOLVE,NODEOFF=500,ELEMENT=500
 0.0, 0.0, 0.0,    0.0, 0.0, 1.0
 0.0, 1.0, 0.0
 155.0,  9
  50.0, 12
 155.0,  9
*rigid body,analytical surface=SURFACE_ROAD,REFNODE=1
*surface, NAME=SURFACE_ROAD,TYPE=CYLINDER
 0.0, 0.0, 0.0,   1.0, 0.0, 0.0
 0.0, 0.0, -1.0
 START, -2.0, -2.0
 LINE,   2.0, -2.0
*surface,NAME=SURFACE_TREAD
 ETREAD, S4
*CONTACT PAIR, INTERACTION=SURFACE_RIGID
 SURFACE_TREAD, SURFACE_ROAD
*SURFACE INTERACTION,NAME=SURFACE_RIGID
*FRICTION
 0.0, 
*ELSET,ELSET=SECT,GEN
 1,499
*ELSET,ELSET=EOUT
 SECT,ETREAD
*NSET,NSET=SECT,GEN
 1, 499
*****************************
*STEP,INC=100,NLGEOM
 FOOTPRINT
*STATIC,LONG TERM
 0.25, 1.0
*BOUNDARY
 NSIDE1, 3
 NSIDE2, 3
 AXLE,  1, 6
 NROAD, 1
 NROAD, 2, , 0.2
 NROAD, 3, 6
*CONTACT FILE,FREQ=0
 CSTRESS, CDISP,
 CFN,CFS, 
 CAREA,XN,XS,CMN,CMS
*EL PRINT,FREQ=100,ELSET=ETREAD
 S11, S22, S33, CE11, CE22, CE33
*EL FILE,FREQ=100,ELSET=ETREAD
 COORD, S, CE, ER, E
*NODE FILE,FREQ=0
 V, A
*NODE FILE,NSET=NROAD,FREQ=1
 U, RF
*NODE PRINT,NSET=NROAD,FREQ=1
 RF,
*END STEP
*****************************
*STEP,INC=100,NLGEOM
 STEADY STATE ROLLING
*STEADY STATE TRANSPORT
 1.0, 1.0
*CONTROLS,ANAL=DISC
*CONTROLS,PARAMETERS=FIELD,FIELD=DISP
 , 0.1
*TRANSPORT VELOCITY
 NTIRE, 10.0
*CONTACT FILE,FREQ=0
 CSTRESS, CDISP,
 CFN,CFS, 
 CAREA,XN,XS,CMN,CMS
*CONTACT PRINT,FREQ=0
 CSTRESS, CDISP,
 CFN,CFS, 
 CAREA,XN,XS
 CMN,CMS
*EL PRINT,FREQ=100,ELSET=ETREAD
 S11, S22, S33, CE11, CE22, CE33
*EL FILE,FREQ=100,ELSET=ETREAD
 COORD, S, CE, ER, E
*NODE FILE,FREQ=0
 V, A
*NODE FILE,NSET=NROAD,FREQ=1
 U, RF
*NODE PRINT,NSET=NROAD,FREQ=1
 RF,
*END STEP