***OVERCONSTRAINT CHECKS - *TIE  between two rigid surfaces
*NODE
1001,0,0
1002,1,0
1003,1,1
1004,0,1
**
1005,1,0
1006,2,0
1007,2,1
1008,1,1
***
5001,0,0
6001,1,0
*ELEMENT,TYPE=CPE4,ELSET=cpe4
101,1001,1002,1003,1004
102,1005,1006,1007,1008
*SOLID SECTION, ELSET=cpe4,MATERIAL=elas
1.0
*MATERIAL,name=elas
*ELASTIC
10000,0.3
*****************
*ELSET,ELSET=rb1
101,
*ELSET,ELSET=rb2
102,
*****************
*RIGID BODY,elset=rb1,ref node=5001
*RIGID BODY,elset=rb2,ref node=6001
*****************
*SURFACE,NAME=left
101,S2
*SURFACE,NAME=right
102,S4
*****************
*TIE,NAME=rigid
left,right
*****************
*NSET,NSET=refn
5001,
*****************
*STEP,NLGEOM
*STATIC
0.1,1.0
*BOUNDARY
5001,1,1
5001,2,2
5001,6,6
*CLOAD
1007,1,100
*NODE PRINT,TOTAL=NO,SUM=NO,FREQ=10
U,
RF
*OUTPUT,HISTORY,FREQ=10
*NODE OUTPUT,NSET=refn
RF,
*END STEP
*****************