*HEADING
TEST FOR OVERCONSTRAINTS--
CONTACT AND BOUNDARY CONDITIONS WITH CPE4 ELEMENTS AND LAGRANGE FRICTION
*PREPRINT,ECHO=YES,MODEL=YES,HISTORY=YES
*NODE,NSET=NALL
1001,0.,0.
1002,1.,0.
1003,1.,1.
1004,0,1.
2001,0.,-1.
2002,2.,-1.
2003,2.,0.
2004,0.,0.
*NSET,NSET=TOP
1001,1002,1003,1004
*NSET,NSET=BOT
2001,2002,2003,2004
*ELEMENT,TYPE=CPE4,ELSET=TOP
10001,1001,1002,1003,1004
*ELEMENT,TYPE=CPE4,ELSET=BOT
10011,2001,2002,2003,2004
*ELSET,ELSET=EALL
TOP,BOT
*SOLID SECTION,MATERIAL=MAT,ELSET=EALL
*MATERIAL,NAME=MAT
*ELASTIC
1.e5,0.3
*SURFACE,NAME=SLAV
TOP,S1
*SURFACE,NAME=MAST
BOT,S3
*CONTACT PAIR,INTERACTION=INTER
SLAV,MAST
*SURFACE INTERACTION,NAME=INTER
*FRICTION,LAGRANGE
0.2
*BOUNDARY
1001,1,1,0
1004,1,1,0
2001,1,2,0
2004,1,1,0
2002,1,2,0
*STEP
*STATIC
0.1,1.
*DLOAD
10001,P3,0.5
*EL PRINT
S,E
*NODE PRINT
U,RF
*OUTPUT,FIELD
*ELEMENT OUTPUT
S,E
*NODE OUTPUT
U,RF
*END STEP
*STEP
*STATIC
0.1,1.
*BOUNDARY
1002,1,1,0.2
1003,1,1,0.2
*END STEP