*HEADING
 Transfer from Standard to Explicit:  Test for B21 element
 - Explicit analysis
 - Unloading of the transverse shear
*IMPORT,UPDATE=YES,STATE=NO
 RECT, BOX, CIRC, HEX, I, L, PIPE, TRAP
*IMPORT NSET
 ALL, LEFT, RIGHT 
*BOUNDARY
 LEFT, 1,2
 LEFT, 6,6
 RIGHT, 1,1
 RIGHT, 6,6
*STEP,NLGEOM,INC=20
*STATIC
1.0,1.0
*CONTROLS, PARAMETERS=FIELD, FIELD=DISPLACEMENT
 ,1.0,,1.,
*CONTROLS, PARAMETERS=FIELD, FIELD=ROTATION
 ,1.0,,10.,
*OUTPUT, FIELD
*NODE OUTPUT
 U,
 COORD,
*ELEMENT OUTPUT
E,
S,
*END STEP