*HEADING
DSA CANTILEVER PROBLEM
1x50 MESH
*PREPRINT, MODEL=YES
*PARAMETER
L=0.0
*DESIGN PARAMETER
L,
*Node
    1,    0.0, 0.0, 0.0
  101,  100.0, 0.0, 0.0
  401,    0.0, 2.0, 0.0
  501,  100.0, 2.0, 0.0
*NGEN, NSET=N1
  1,  101, 1
*NGEN, NSET=N2
  401,  501,1
*NFILL
N1, N2,  2,  200
*PARAMETER SHAPE VARIATION, PARAMETER=L
    1, -1.0, 0.0, 0.0
  201, -1.0, 0.0, 0.0
  401, -1.0, 0.0, 0.0
*ELEMENT, TYPE=CPS8
1,   1,3, 403, 401, 2, 203, 402, 201
*ELGEN, ELSET=EALL
  1,  50, 2, 1
*MATERIAL, NAME=ABAQUS
*ELASTIC
210000., 0.1
*DENSITY
0.1,
*SOLID SECTION, ELSET=EALL, MATERIAL=ABAQUS
1.0,
*ELSET,ELSET=EFIXED
50,
*NSET,NSET=BOUND
101, 301, 501
*NSET,NSET=NFREE
1,201,401
*BOUNDARY
BOUND, 1, 3, 0.0
*STEP, DSA
*STATIC
1.0, 1.0
*CLOAD
  1, 2,  -0.5
201, 2,   2.0
401, 2,  -0.5
*OUTPUT, FIELD
*ELEMENT OUTPUT,ELSET=EFIXED
S,
*NODE OUTPUT,NSET=NFREE
U,
*OUTPUT, HISTORY, FREQUENCY=0
*DESIGN RESPONSE
*NODE RESPONSE,NSET=NFREE
U,
*ELEMENT RESPONSE,ELSET=EFIXED
S,
*END STEP
*STEP,DSA
*FREQUENCY,EIGENSOL=LANCZOS,SIM=NO
 3,
***DSA CONTROLS, SIZING FREQUENCY=1
*DESIGN RESPONSE
*END STEP