*HEADING
 SKEW-SENSITIVITY ANALYSIS, 30 DEG TRAPEZOID, C3D10M,
**
*NODE
*NODE,NSET=MID
*NODE
*NODE
*NODE,NSET=MID
*NODE
*NODE
*NODE,NSET=MID
*NODE
*NODE
*NODE,NSET=MID
*NODE
*NODE
*NODE,NSET=MID
*NODE
*NODE
*NODE,NSET=MID
*NODE
*NODE
*NODE,NSET=MID
*NODE
*NODE
*NODE,NSET=MID
*NODE
**
**
*ELEMENT, TYPE=C3D10M, ELSET=EALL
*SOLID SECTION,ELSET=EALL,MATERIAL=A1
*MATERIAL,NAME=A1
*ELASTIC
1.E8,.0
**
** step  1,Default
**
*STEP, PERTURBATION
Linear Static Analysis
**
This load case is the default load case that always appears
**
*STATIC
**
** fix
**
*BOUNDARY
       1, 1,,          0.
       1, 2,,          0.
       1, 3,,          0.
       4, 1,,          0.
       4, 2,,          0.
       4, 3,,          0.
       7, 1,,          0.
       7, 2,,          0.
     MID, 3,,          0.
**
** load
**
*CLOAD, OP=NEW
     183, 2,       -0.25
     189, 2,       -0.25
     200, 2,       -0.25
     206, 2,       -0.25
*NODE FILE
U,
*OUTPUT,FIELD
*NODE OUTPUT
U,
*EL PRINT
S,
E,
**
**
*END STEP