*HEADING
 L-shaped bracket
 272 element mesh, non-linear buckling analysis
*RESTART,WRITE,FREQ=10
*NODE
  101,   0., 225.,
  165, 225., 225.,
  173, 255., 225.,
  901,   0., 255.,
  965, 225., 255.,
  973, 255., 255.,
 1101, 225.,   0.,
 1165, 225., 225.,
 1901, 255.,   0.,
 1965, 255., 225.,
*NGEN,NSET=EDGE1
  101,  165
  165,  173
*NGEN,NSET=EDGE2
  901,  965
  965,  973
*NGEN,NSET=EDGE3
 1101, 1165
*NGEN,NSET=EDGE4
 1901, 1965
*NFILL
 EDGE1, EDGE2, 8, 100
*NFILL
 EDGE3, EDGE4, 8, 100
*ELEMENT,TYPE=S4
  101, 101, 103, 303, 301
 1101, 1101, 1301, 1303, 1103
*ELGEN,ELSET=BLOCK1
 101,36,2,2, 4,200,200
*ELGEN,ELSET=BLOCK2
 1101,4,200,200, 31,2,2
*ELEMENT,TYPE=S4,ELSET=BLOCK3
 1163, 1163, 1363, 167, 165
 1363, 1363, 1563, 169, 167
 1563, 1563, 1763, 171, 169
 1763, 1763, 1963, 173, 171
*ELSET,ELSET=EALL
 BLOCK1, BLOCK2, BLOCK3
*SHELL SECTION,MATERIAL=A1,ELSET=EALL
 .6,3
*MATERIAL,NAME=A1
*ELASTIC
 71240, 0.31
*NSET,NSET=WALL,GEN
 101, 901, 100
*NSET,NSET=TIP
 1501,
*BOUNDARY
 WALL,1,6
*IMPERFECTION,FILE=lbracket_buckle_272s4,STEP=1
 1,0.01
*STEP,NLGEOM,INC=50
*STATIC,RIKS
 0.01,1.0,,,1.0
*CLOAD
 TIP,1,2.0
*NODE FILE
 U,
 CF,
*OUTPUT,FIELD
*NODE OUTPUT
U,
CF,
*ENDSTEP