*HEADING
o INCREMENTAL DSA ANALYSIS, SAX AND SAXA ELEMENTS
o ONE STEP
*PARAMETER
T=1.0
X=0.0
*DESIGN PARAMETER
T,X
*DSA CONTROLS, TOLERANCE=1e-10
*NODE
** SAX1
1, 20.0,  90.0
2, 20.0, 100.0
** SAX2
3, 20.0,  70.0
4, 20.0,  75.0
5, 20.0,  80.0
*PARAMETER SHAPE VARIATION, PARAMETER=X
  2, 1.0, 0.0
  4, 0.5, 0.0
  5, 1.0, 0.0
*ELEMENT, TYPE=SAX1, ELSET=SAX1
1, 1, 2
*ELEMENT, TYPE=SAX2, ELSET=SAX2
2, 3, 4, 5
*ELSET, ELSET=EALL
SAX1, SAX2
*SHELL SECTION, ELSET=EALL, MATERIAL=MAT1
<T>,
*MATERIAL, NAME=MAT1
*ELASTIC
2E04, 0.3
*NSET, NSET=FIXED
 1,   3
*BOUNDARY
FIXED, ENCASTRE
*STEP, NLGEOM, DSA
*STATIC
0.2, 1.0
*CLOAD
2, 1, 30.0
5, 1, 30.0
*OUTPUT, FIELD
*ELEMENT OUTPUT
S,
LE,
*NODE OUTPUT
U,
RF,
*DESIGN RESPONSE
*ELEMENT RESPONSE
S,
LE,
*NODE RESPONSE
U,
RF,
*END STEP