*HEADING
 BASIC VERIFICATION - MPC TYPE SLIDER
 ELEMENTS:B31
*NODE
1,0.
2,10.,10.,10.
3,20.,20.,20.
4,10.,0.,
*ELEMENT,TYPE=B31, ELSET=EALL
1,1,3
4,4,2
*BEAM SECTION,SECTION = RECT,MATERIAL=MAT, ELSET=EALL
1.,1.
*NSET, NSET=ONE
1, 
*TRANSFORM, NSET=ONE
** 45 Deg. about Y axis, Then, 35.26 deg about Z axis
** Transformed X axis is along the bar 
1.,1.,1.,-1.,2.,-1.
*NSET,NSET=THREE
3, 
*TRANSFORM, NSET=THREE
** 60 deg. about Y axis
0.5,0.,-0.8660254,0.,1.0,0.0
*NSET, NSET=TWO
2, 
*TRANSFORM, NSET=TWO
** 45 about Z axis then 45 deg about Y axis
0.5,0.5,-0.7071,-0.7071,0.7071,0.0
*BOUNDARY
1,1,6
4,1,3
4,6,6
*MATERIAL,NAME=MAT
*ELASTIC
3.E6, 
*MPC
SLIDER,2,1,3
*restart, write
*STEP,PERTURBATION
*STATIC
*EL PRINT,FREQ=0
*NODE FILE
U,RF
*OUTPUT,FIELD
*NODE OUTPUT
U,RF
*NODE PRINT, GLO=YES
U, 
RF, 
*BOUNDARY
1,6,6,0.3
*CLOAD
3,2,10.0
*ENDSTEP
*STEP,NLGEOM
*STATIC
*BOUNDARY
1,6,6,0.3
*CLOAD
3,2,10.0
*CONTROLS, PARAM=FIELD
5E-4, 
*EL PRINT,FREQ=0
*NODE FILE
U,RF,COORD
*OUTPUT,FIELD
*NODE OUTPUT
U,RF,COORD
*NODE PRINT, GLO=YES
U, 
RF, 
COORD, 
*END STEP