*HEADING
 SKEW-SENSITIVITY ANALYSIS, 30 DEG TRAPEZOIDAL, CPS4I, 1 X 8 MESH  
*NODE
1,0.,0.
3,.692265,0.
5,1.557735,0.
13,4.557735,0.
15,5.192265,0.
17,6.,0.
401,0.,.2
403,.807735,.2
405,1.442265,.2
413,4.442265,.2
415,5.307735,.2
417,6.,.2
*NGEN
3,15,4
5,13,4
403,415,4
405,413,4
*NSET,NSET=FIX
1,401
*ELEMENT,TYPE=CPS4I
1,1,3,403,401
*ELGEN,ELSET=EALL
1,8,2,1
*MATERIAL,NAME=A1
*ELASTIC
1.E8,0.
*SOLID SECTION,MATERIAL=A1,ELSET=EALL
.01, 
*STEP,PERTURBATION
*STATIC
*BOUNDARY
FIX,1,2
*CLOAD
17,2,-.5
417,2,-.5
*EL PRINT
COORD, 
S, 
E, 
*NODE FILE
U, 
*OUTPUT,FIELD
*NODE OUTPUT
U,
*END STEP