*HEADING
: CONTACT TEST, RING SLIDING ON CYLINDER [ISL21A with CAXA41]
Liner Perturbation steps with Load Case Definition
*RESTART,WRITE,FREQ=99
*NODE
 1, 1.3,7.
 36, 1.3,0.
 301, 1.6,7.
 336, 1.6,0.
 401, 1.6,8.
 416, 1.6,6.
 601, 1.8,8.
 616, 1.8,6.
 701, 1.8,7.
 704, 1.8,6.4
 1001, 2.1,7.
 1004, 2.1,6.4
*NGEN,NSET=BASE
 36,336,100
*NGEN,NSET=TOP
 1,301,100
*NSET,NSET=BASEB,GENERATE
 10036,10336,100
*NSET,NSET=TOPB,GENERATE
 10001,10301,100
*NGEN,NSET=B1
 401,601,100
*NGEN,NSET=B2
 416,616,100
*NGEN,NSET=C1
 701,1001,100
*NGEN,NSET=C2
 704,1004,100
*NFILL
 TOP,BASE,35
 B1,B2,15
 C1,C2,3
*ELEMENT,TYPE=CAXA41,OFFSET=10000
 1, 2,102,101,1
 501, 402,502,501,401
 801, 702,802,801,701
*ELGEN,ELSET=STEEL
 1, 3,100,1, 35,1,10
 501, 2,100,1, 15,1,10
 801, 3,100,1, 3,1,10
*ELSET,ELSET=OUTER
 803,813,823
*ELEMENT,TYPE=ISL21A
 401, 401,402
 701, 701,702
1401, 10401, 10402
1701, 10701, 10702
*ELGEN,ELSET=SLIDE1
 401,15,1,1
*ELGEN,ELSET=SLIDE2
 701,3,1,1
*ELGEN,ELSET=SLIDE1B
 1401,15,1,1
*ELGEN,ELSET=SLIDE2B
 1701,3,1,1
*INTERFACE,ELSET=SLIDE1
*FRICTION
 .2, 
*ASYMMETRIC-AXISYMMETRIC,MODE=1,ANGLE=0.0
*INTERFACE,ELSET=SLIDE2
*FRICTION
 .6, 
*ASYMMETRIC-AXISYMMETRIC,MODE=1,ANGLE=0.0
*INTERFACE,ELSET=SLIDE1B
*FRICTION
 .2, 
*ASYMMETRIC-AXISYMMETRIC,MODE=1,ANGLE=180.0
*INTERFACE,ELSET=SLIDE2B
*FRICTION
 .6, 
*ASYMMETRIC-AXISYMMETRIC,MODE=1,ANGLE=180.0
*SOLID SECTION,ELSET=STEEL,MATERIAL=STEEL
*MATERIAL,NAME=STEEL
*ELASTIC
 30.E6,0.3
*SLIDE LINE,TYPE=LINEAR,ELSET=SLIDE1,GENERATE
 301,331,1
*SLIDE LINE,TYPE=LINEAR,ELSET=SLIDE2,GENERATE
 601,616,1
*SLIDE LINE,TYPE=LINEAR,ELSET=SLIDE1B,GENERATE
 10301,10331,1
*SLIDE LINE,TYPE=LINEAR,ELSET=SLIDE2B,GENERATE
 10601,10616,1
*NSET,NSET=NFILE
 1, 36, 301, 336, 401, 416, 601, 616, 701, 704, 1001, 1004,
10001,10036,10301,10336,10401,10416,10601,10616,10701,10704,11001,11004,
*ELSET,ELSET=EFILE1
409,410,411,412,413,701,702,703
1409,1410,1411,1412,1413,1701,1702,1703
*ELSET,ELSET=EFILE2
404,405,406,407,408,409,701,702,703
1404,1405,1406,1407,1408,1409,1701,1702,1703
***ELSET,ELSET=EFILE
** SLIDE1,SLIDE2,SLIDE1B,SLIDE2B
*STEP,NLGEOM
  PRESSURIZE COLLAR
*STATIC
 1.0,1.0
*BOUNDARY
 BASE,2
 TOP,2
 BASEB,2
 TOPB,2
 336,1
 1001,2
 601,2
 10336,1
 11001,2
 10601,2
*DLOAD
 OUTER,P2,30000.
*PRINT,CONTACT=YES
*NODE PRINT,FREQ=2
U,RF
*EL PRINT,ELSET=SLIDE1
S,E
*EL PRINT,ELSET=SLIDE2
S,E
*EL PRINT,ELSET=SLIDE1B
S,E
*EL PRINT,ELSET=SLIDE2B
S,E
*EL PRINT,ELSET=STEEL,FREQ=99
S,
E,
SINV, 
*OUTPUT,FIELD,FREQ=99
*ELEMENT OUTPUT,ELSET=EFILE1
S,
*OUTPUT,FIELD,FREQ=99
*NODE OUTPUT,NSET=NFILE
U,RF
*END STEP
*STEP,NLGEOM
  MOVE SLIDER DOWN
*STATIC
 .1,1.0
*BOUNDARY
 BASE,2
 TOP,2
 336,1
 1001,2,,-4.5
 601,2,,-5.
10336,1
11001,2,,-4.5
10601,2,,-5.
*OUTPUT,FIELD,FREQ=99
*ELEMENT OUTPUT,ELSET=EFILE2
S,
*END STEP

*STEP,PERTURBATION
*STATIC
*LOAD CASE,NAME="Slider Down-1"
*BOUNDARY
 BASE,2
 TOP,2
 336,1
 1001,2,,-2.25
 601,2,,-2.5
*END LOAD CASE
*LOAD CASE,NAME="Slider Down-2"
*BOUNDARY
 BASE,2
 TOP,2
 336,1
 1001,2,,-4.5
 601,2,,-5
*END LOAD CASE
*OUTPUT,FIELD,FREQ=99
*NODE OUTPUT,NSET=NFILE
U,RF
*END STEP