*HEADING
 HERTZ CONTACT PROBLEM 3D:
 ELEM: C3D10M    INTERFACE: SMALL SLIDING
*RESTART,WRITE,FREQUENCY=1
*NODE
*NODE,NSET=RIGNODE
*ELEMENT, TYPE=C3D10M, ELSET=EALL
*NSET, NSET=DISP
*ELSET,ELSET=BOT
*EQUATION
DISP,2,1,430,2,-1
**
** Contact definition
**
*ELEMENT,TYPE=R3D4,ELSET=ERIGID
*RIGID BODY,ELSET=ERIGID,REF NODE=10000
*surface,NAME=RIGID
ERIGID,SPOS
*surface,NAME=CYLBOT
BOT,S1
*CONTACT PAIR, INTERACTION=HERTZ,SMALL SLIDING,SUPPLEMENTARY CONSTRAINTS=YES
CYLBOT,RIGID
*SURFACE INTERACTION,NAME=HERTZ,TRACKING THICKNESS=10
*SURFACE BEHAVIOR, AUGMENTED LAGRANGE
*BOUNDARY
10000, 1,6
     451, 1,,
     452, 1,,
     453, 1,,
     454, 1,,
     455, 1,,
     456, 1,,
     457, 1,,
*SOLID SECTION,MATERIAL=A1, ELSET=EALL,ORIENTATION=DUMMY
*MATERIAL,NAME=A1
*ELASTIC
 30.E6,0.3
*ORIENTATION,NAME=DUMMY
*NSET,NSET=SINGLE
*TRANSFORM,NSET=SINGLE
*STEP,INC=10
*STATIC,DIRECT
.1,1.
*BOUNDARY
 430,2,,-0.4
*PRINT,CONTACT=YES
*EL PRINT,FREQUENCY=2
S11,E11
*NODE PRINT,FREQUENCY=10
U,
RF,
*EL PRINT,POS=AVERAGED,ELSET=BOT,FREQ=5
S
*OUTPUT,FIELD,FREQ=10
*NODE OUTPUT
RF,
*OUTPUT,FIELD,FREQ=5
*CONTACT OUTPUT,VARIABLE=PRESELECT,MASTER=RIGID,SLAVE=CYLBOT
*ELEMENT OUTPUT,POS=AVERAGED,ELSET=BOT
S
*END STEP