*HEADING
 SKEW-SENSITIVITY ANALYSIS, 45 DEG TRAPEZOIDAL, C3D20R, 1 X 8 MESH
*NODE,NSET=SIDE1
*NGEN,NSET=SIDE1
*NCOPY, OLD SET=SIDE1, CHANGE NUMBER=1000, SHIFT
*NCOPY, OLD SET=SIDE1, CHANGE NUMBER=2000, SHIFT
*NSET,NSET=FIX
*ELEMENT,TYPE=C3D20R
*ELGEN,ELSET=EALL
*MATERIAL,NAME=A1
*ELASTIC
1.E8,0.3
*SOLID SECTION,MATERIAL=A1,ELSET=EALL
*STEP,PERTURBATION
*STATIC
*BOUNDARY
SIDE1,3
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