*HEADING
 SKEW-SENSITIVITY ANALYSIS, 30 DEG PARALLELOGRAM, C3D4
*RESTART,WRITE
*NODE,NSET=SIDE1
1,0.,0.
2,0.346133,0.
3,.692265,0.
15,5.192265,0
16,5.596133,0.
17,6.,0.
401,0.,.1
417,6.,.1
801,0.,.2
802,0.403868,.2
803,.807735,.2
815,5.307735,.2
816,5.653868,.2
817,6.,.2
*NGEN,NSET=SIDE1
3,16
401,417
803,816
*NCOPY, OLD SET=SIDE1, CHANGE NUMBER=1000, SHIFT
0.,0.,.005

*NCOPY, OLD SET=SIDE1, CHANGE NUMBER=2000, SHIFT
0.,0.,.01

*NSET,NSET=FIX
1,401,801,1001,1801,2001,2401,2801,
*ELEMENT,TYPE=C3D4
       1,       1,     801,    2001,       3
       2,    2801,    2001,     801,    2803
       3,     803,       3,    2803,     801
       4,    2003,    2803,       3,    2001
       5,       3,     801,    2001,    2803
*ELGEN,ELSET=EALL
1,8,2,5
2,8,2,5
3,8,2,5
4,8,2,5
5,8,2,5
*MATERIAL,NAME=A1
*ELASTIC
1.E8,0.
*SOLID SECTION,MATERIAL=A1,ELSET=EALL
*STEP,PERTURBATION
*STATIC
*BOUNDARY
FIX,1,3
*CLOAD
17,2,-.25
817,2,-.25
2017,2,-.25
2817,2,-.25
*EL PRINT
COORD, 
S, 
E, 
*NODE FILE
U, 
*OUTPUT,FIELD
*NODE OUTPUT
U,
*END STEP