*HEADING
 BASIC VERIFICATION - ELEMENT END RELEASE ON BEAM ELEMENTS 
 RELEASE ALL ROTATIONAL DEGREES OF FREEDOM
***************
** TEST 1: B21
***************
*NODE,NSET=NALL
1,0.
2,10.
4,20.
*ELEMENT,TYPE=B21, ELSET=TEST1
1,1,2
2,2,4
*NSET,NSET=LEFT
1, 
*NSET,NSET=RIGHT
4, 
*ELSET,ELSET=RELEASE-1
1, 
***************
** TEST 2: B22
***************
*NODE,NSET=NALL
11,0.,10.0
12,10.,10.0
14,20.,10.0
15,5.0,10.0
16,15.0,10.0
*ELEMENT,TYPE=B22, ELSET=TEST2
11,11,15,12
12,12,16,14
*NSET,NSET=LEFT
11, 
*NSET,NSET=RIGHT
14, 
*ELSET,ELSET=RELEASE-2
11, 
***************
** TEST 3: B23
***************
*NODE,NSET=NALL
101,0.,20
102,10.,20
104,20.,20
*ELEMENT,TYPE=B23, ELSET=TEST3
101,101,102
102,102,104
*NSET,NSET=LEFT
101, 
*NSET,NSET=RIGHT
104, 
*ELSET,ELSET=RELEASE-3
101, 
**
**  REMAINDER OF INPUT DECK SAME FOR ALL TESTS
**
*ELSET,ELSET=EALL
TEST1,TEST2,TEST3
*ELSET,ELSET=RELEASED
RELEASE-1,RELEASE-2,RELEASE-3
*BEAM SECTION,SECTION=CIRC,MATERIAL=MAT, ELSET=EALL
1., 
*BOUNDARY
LEFT,1,2
LEFT,6,6
RIGHT,1,2
RIGHT,6,6
*RELEASE
RELEASE-1,S2,ALLM
RELEASE-2,S2,ALLM
RELEASE-3,S2,ALLM
*MATERIAL,NAME=MAT
*ELASTIC
3.E11, 
*RESTART,WRITE,FREQ=999
*STEP
*STATIC
*DLOAD
RELEASED,PY,-1000.
*EL PRINT,FREQ=999
*EL FILE,FREQ=999
 S, 
 E, 
*NODE PRINT
 U, 
*NODE FILE
 U, 
*END STEP
*STEP,NLGEOM
*STATIC
*DLOAD
RELEASED,PY,-1000.0
*EL PRINT,FREQ=999
*EL FILE,FREQ=999
 S, 
 E, 
*NODE PRINT
 U, 
*NODE FILE
 U, 
*END STEP