*node
101,0,0
102,1,0
103,1,1
104,0,1
**
201,1,0
202,2,0
203,2,1
204,1,1
**
10001,0.5,0.5
10002,0.5,0.5
10003,0.5,0.5
*element,type=cpe4,elset=cpe4
1001,101,102,103,104
*element,type=cpe4,elset=sec
2001,201,202,203,204
*elset,elset=eall
cpe4,sec
*SOLID SECTION,elset=eall,material=elas
1.0
*MATERIAL,name=elas
*elastic
10000,
***********************
*rigid body,        ref=10001,elset=cpe4
*kinematic coupling,ref=10002
101,
201,
*kinematic coupling,ref=10003
104,
202,
***********************
*boundary
10001,1,6
10002,1,6
10003,1,6
***********************
*step,nlgeom
*static
0.1,1.0
*boundary
10001,1,1,0.1
*node print
u,
*end step
***********************