*HEADING
 BOUNCING BALL - DYNAMIC ANALYSIS
*NODE
*NODE,NSET=FIX
*NODE,NSET=NALL
*ELEMENT,TYPE=CPE6M ,ELSET=CYLINDER
*NSET,NSET=EQUATION,GENERATE
*ELSET,ELSET=BOT
*ELEMENT,TYPE=R2D2
*ELGEN,ELSET=RIGID
*RIGID BODY,ELSET=RIGID,REF NODE=300
*surface,NAME=BOTSUR
BOT,S1
*surface,NAME=RIGSUR
RIGID,SPOS
*CONTACT PAIR,INTERACTION=NO_FRI,SMALL SLIDING
BOTSUR,RIGSUR
*SURFACE INTERACTION,NAME=NO_FRI
1.0,
**
**
**
*EQUATION
EQUATION,2,1.,288,2,-1.
*BOUNDARY
       1, 1,,
       2, 1,,
       3, 1,,
       4, 1,,
       5, 1,,
       6, 1,,
       7, 1,,
       8, 1,,
*SOLID SECTION,ELSET=CYLINDER,MATERIAL=A1
*MATERIAL,NAME=A1
*ELASTIC
 30.E6,.3
*DENSITY
 7.5E-4,
*NSET,NSET=TOPNODES ,GENERATE
*INITIAL CONDITIONS,TYPE=VELOCITY
NALL,2,-352.
*RESTART,WRITE,FREQUENCY=25
*STEP,INC=100
  DYNAMIC HERTZ CONTACT
*DYNAMIC,HAFTOL=1.E10,APPLICATION=TRANSIENT FIDELITY
 2.E-5,1.E-3,,2.E-5
*ENERGY PRINT,FREQUENCY=2
*CONTACT PRINT ,SLAVE=BOTSUR,MASTER=RIGSUR
*CONTACT FILE,SLAVE=BOTSUR,MASTER=RIGSUR
*NODE PRINT,FREQUENCY=20
U,RF
*PRINT,RESIDUAL=NO
*NSET,NSET=OUTFIL1,GENERATE
*NODE FILE,NSET=OUTFIL1,FREQUENCY=10
U,
*NSET,NSET=OUTFIL2,GENERATE
*NODE FILE,NSET=OUTFIL2,FREQUENCY=10
V,A
*NSET,NSET=OUTFIL3,GENERATE
*NODE FILE,NSET=OUTFIL3,FREQUENCY=10
RF,
*CONTROLS,PARAMETERS=FIELD,FIELD=DISPLACEMENT
 , , 0.1
*END STEP