*HEADING
ABAQUS/EXPLICIT SELF CONTACT: JOUNCE BUMPER WITH CAX4R ELEMENTS
THE INTERFERENCE FIT IS RESOLVED BY MOVING THE SHAFT DIE IN THE RADIAL 
DIRECTION.
*NODE, NSET=NALLFEM, INPUT=selfcontact_bump_node_cax4r.inp
*NODE, NSET=DIES
    2000,         40.,         0.
    2001,         40.,        76.5
    2002,         10.,        40.5
*NSET, NSET=BOTDIE
2000, 
*NSET, NSET=TOPDIE
2001, 
*NSET, NSET=SHAFTDIE
2002,
**
*ELEMENT, TYPE=CAX4R, ELSET=ALLFEM, INPUT=selfcontact_bump_element_cax4r.inp
*ELEMENT, TYPE=MASS, ELSET=RIGMASS
2000, 2000
2001, 2001
2002, 2002
**
*SOLID SECTION, ELSET=ALLFEM, MATERIAL=HYPRFOAM
1.,
**
*MASS, ELSET=RIGMASS
10.,
** 
** Material
** 
*MATERIAL, NAME=HYPRFOAM
*DENSITY
 0.0001,
*HYPERFOAM, N=1
3., 11.5,  0.1
** 
** Rigid Surfaces
** 
*RIGID BODY, ANALYTICAL SURFACE=BOTDIE, REF NODE=2000
*SURFACE,NAME=BOTDIE, TYPE=SEGMENTS
START,     0.00,  0.00
 LINE,    50.00,  0.00
*RIGID BODY, ANALYTICAL SURFACE=TOPDIE, REF NODE=2001
*SURFACE, NAME=TOPDIE, TYPE=SEGMENTS
START,    50.00, 76.50
 LINE,     0.00, 76.50
*RIGID BODY, ANALYTICAL SURFACE=SHAFTDIE, REF NODE=2002
*SURFACE, NAME=SHAFTDIE, TYPE=SEGMENTS
START,     10.00, 80.00
 LINE,     10.00, -5.00
**
** Deformable Surfaces
**
*INCLUDE, INPUT=selfcontact_bump_surfdef_cax4r.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
2000, 1, 1
2000, 6, 6
2001, ENCASTRE
2002, 2, 2
2002, 6, 6
**
** History definition
** 
*STEP
Move the surface SHAFTDIE in the outward radial direction
*DYNAMIC, EXPLICIT
, 1.
*BULK VISCOSITY
0.06, 1.2
** 
** Boundary conditions
** 
*BOUNDARY,  TYPE=DISPLACEMENT, AMPLITUDE=RAMP1
2000, 2, 2
2002, 1, 1, 1.
** 
** Interaction properties
** 
*SURFACE INTERACTION, NAME=INTPROP-1
1.,
*FRICTION
0.05, 
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL CONSTRAINT=KINEMATIC
BUMP_SURF1, TOPDIE
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL CONSTRAINT=KINEMATIC
BUMP_SURF2, SHAFTDIE
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL CONSTRAINT=KINEMATIC
BUMP_SURF3, BOTDIE
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL CONSTRAINT=KINEMATIC
BUMP_SELF1,
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL CONSTRAINT=KINEMATIC
BUMP_SELF2,
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL CONSTRAINT=KINEMATIC
BUMP_SELF3,
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL CONSTRAINT=KINEMATIC
BUMP_SELF4,
*CONTACT PAIR, INTERACTION=INTPROP-1, MECHANICAL CONSTRAINT=KINEMATIC
BUMP_SELF5,
** 
** Output requests
** 
*OUTPUT, FIELD, OP=NEW, NUMBER INTERVAL=10, TIME MARKS=NO
*NODE OUTPUT
U, V, A, RF
*ELEMENT OUTPUT
S, PE, 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
NALLFEM,
*ELSET, ELSET=QA_TEST
ALLFEM,
**
**
*OUTPUT, FIELD, OP=NEW, NUMBER INTERVAL=1
*NODE OUTPUT, NSET=QA_TEST
U,
**
**
*FILE OUTPUT,TIMEMARKS=NO,NUM=1
*EL FILE, ELSET=QA_TEST
LE,
*NODE FILE, NSET=QA_TEST
U, 
*ENERGY FILE
**************************
*END STEP
*STEP
 Move the surface BOTDIE to compress the bumper
*DYNAMIC, EXPLICIT
, 10.
*BULK VISCOSITY
0.06, 1.2
** 
** Boundary conditions
** 
*BOUNDARY, OP=MOD, TYPE=DISPLACEMENT, AMPLITUDE=RAMP2
2000, 2, 2, 42.
*END STEP