*HEADING
ABAQUS/EXPLICIT SELF CONTACT: JOUNCE BUMPER WITH CAX3 ELEMENTS
THE INTERFERENCE FIT IS RESOLVED BY MOVING THE SHAFT DIE IN THE RADIAL 
DIRECTION.
*NODE, NSET=NALLFEM, INPUT=selfcontact_bump_node_cax3.inp
*NODE, NSET=DIES
    1000,         50.,          0.
    1001,         50.,        76.5
    1002,         10.,        40.5
**
*NSET, NSET=BOTDIE
1000, 
*NSET, NSET=TOPDIE
1001, 
*NSET, NSET=SHAFTDIE
1002, 
**
*ELEMENT, TYPE=CAX3, ELSET=ALLFEM, INPUT=selfcontact_bump_element_cax3.inp
*ELEMENT,TYPE=MASS,ELSET=RIGMASS
10000,1000
10001,1001
10002,1002
**
** allfem
**
*SOLID SECTION, ELSET=ALLFEM, MATERIAL=HYPRFOAM
1.,
*MASS,ELSET=RIGMASS
10.,
**
** Material
**
*MATERIAL, NAME=HYPRFOAM
*DENSITY
 0.0001
*HYPERFOAM,N=1
3.0,11.5,.1
**
** Rigid Surfaces
**
*RIGID BODY, ANALYTICAL SURFACE=BOTDIE, REF NODE=1000
*SURFACE,NAME=BOTDIE, TYPE=SEGMENTS
START,     0.00,  0.00
 LINE,    50.00,  0.00
*RIGID BODY, ANALYTICAL SURFACE=TOPDIE, REF NODE=1001 
*SURFACE,NAME=TOPDIE, TYPE=SEGMENTS
START,    50.00, 76.50
 LINE,     0.00, 76.50
*RIGID BODY, ANALYTICAL SURFACE=SHAFTDIE, REF NODE=1002
*SURFACE,NAME=SHAFTDIE, TYPE=SEGMENTS
START,    10.00, 80.00
 LINE,    10.00, -5.00
**
** Deformable Surfaces
**
*INCLUDE, INPUT=selfcontact_bump_surfdef_cax3.inp
**
** Amplitude definition
**
*AMPLITUDE, NAME=RAMP1, DEFINITION=SMOOTH STEP
0., 0., 1., 1.
*AMPLITUDE, NAME=RAMP2, DEFINITION=SMOOTH STEP
0., 0., 10., 1.
**
** Boundary conditions
**
*BOUNDARY
1000, 1, 1
1000, 6, 6
1001, ENCASTRE
1002, 2, 2
1002, 6, 6
**
** History definition
**
*STEP
Move the surface SHAFTDIE in the outward radial direction
*DYNAMIC, EXPLICIT
 , 1.
*BULK VISCOSITY
0.06, 1.2
*BOUNDARY, TYPE=DISPLACEMENT, AMPLITUDE=RAMP1
1000, 2, 2
1002, 1, 1, 1.
**
** Interaction properties
** 
*SURFACE INTERACTION, NAME=INTPROP-1
1.,
*FRICTION
0.05, 
*CONTACT PAIR, INTERACTION=INTPROP-1,CPSET=CPSET1, MECHANICAL=KINEMATIC
TOPSKIN,SHAFTDIE
*CONTACT PAIR, INTERACTION=INTPROP-1,CPSET=CPSET2, MECHANICAL=PENALTY
BOTSKIN,SHAFTDIE
*CONTACT PAIR, INTERACTION=INTPROP-1,CPSET=CPSET3, MECHANICAL=KINEMATIC
TOPSKIN,TOPDIE
*CONTACT PAIR, INTERACTION=INTPROP-1,CPSET=CPSET4, MECHANICAL=PENALTY
BOTSKIN,BOTDIE
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL=KINEMATIC
SC1,SC1
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL=KINEMATIC
SC3,SC3
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL=KINEMATIC
SC5,SC5
** 
** Output requests
** 
*OUTPUT, FIELD, OP=NEW, NUMBER INTERVAL=10, TIME MARKS=NO
*NODE OUTPUT
U, V, A, RF
*ELEMENT OUTPUT
S, PE, PEEQ, LE
*CONTACT OUTPUT
CSTRESS, 
*OUTPUT, HISTORY, OP=NEW, TIME INTERVAL=0.1
*ENERGY OUTPUT, VAR=PRESELECT
*NODE OUTPUT, NSET=BOTDIE
U, RF
*********QA_TEST********
*NSET, NSET=QA_TEST_NODES
NALLFEM,
*OUTPUT, FIELD, OP=NEW, NUMBER INTERVAL=1
*NODE OUTPUT, NSET=QA_TEST_NODES
U
***************************
*END STEP
*STEP
 Move the surface BOTDIE to compress the bumper
*DYNAMIC, EXPLICIT
 , 10.0
*BOUNDARY, OP=MOD, TYPE=DISPLACEMENT, AMP=RAMP2
1000, 2, 2 ,42.
*CONTACT CONTROLS,FASTLOCALTRK=NO,GLOBTRKINC=20,CPSET=CPSET2,SCALE PENALTY=10
*CONTACT CONTROLS,FASTLOCALTRK=NO,GLOBTRKINC=20,CPSET=CPSET4,SCALE PENALTY=10
*END STEP