*HEADING
EC34SFE2: EIGENVALUE ANALYSIS OF AN UNCONSTRAINED PATCH OF ELEMENTS  [C3D4]
*PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO
*NODE,NSET=OUT
 10,  0.,0.,1.
 30,  1.,0.,1.
 70,  0.,0.,0.
 90,  1.,0.,0.
 210, 0.,1.,1.
 230, 1.,1.,1.
 270, 0.,1.,0.
 290, 1.,1.,0.
*NODE,NSET=IN
 1010, .32,.286,.643
 1030, .677,.305,.683
 1070, .249,.342,.192
 1090, .826,.288,.288
 1210, .165,.745,.702
 1230, .788,.693,.644
 1270, .273,.750,.230
 1290, .850,.649,.263
*ELEMENT,TYPE=C3D4,ELSET=E1
   1,1070,1090,1290,1030
   2,1030,1290,1210,1230
   3,1070,1290,1270,1210
   4,1070,1030,1210,1010
   5,1070,1030,1290,1210
   6,1070,1270,1290, 270
   7, 270,1290,  90, 290
   8,1070,1290,1090,  90
   9,1070, 270,  90,  70
  10,1070, 270,1290,  90
  11,1030,1230,1210, 230
  12, 230,1210,  10, 210
  13,1030,1210,1010,  10
  14,1030, 230,  10,  30
  15,1030, 230,1210,  10
  16,1070,1090,1030,  90
  17,  90,1030,  10,  30
  18,1070,1030,1010,  10
  19,1070,  90,  10,  70
  20,1070,  90,1030,  10
  21,1030,1090,1290,  90
  22,  90,1290, 230, 290
  23,1030,1290,1230, 230
  24,1030,  90, 230,  30
  25,1030,  90,1290, 230
  26,1210,1230,1290, 230
  27, 230,1290, 270, 290
  28,1210,1290,1270, 270
  29,1210, 230, 270, 210
  30,1210, 230,1290, 270
  31,1210,1270,1070, 270
  32, 270,1070,  10,  70
  33,1210,1070,1010,  10
  34,1210, 270,  10, 210
  35,1210, 270,1070,  10
*SOLID SECTION,MATERIAL=A1, ELSET=E1
*MATERIAL,NAME=A1
*ELASTIC,TYPE=ISOTROPIC
 1.E6,.25
*DENSITY
7.5E-4, 
*STEP
*FREQUENCY, eigensolver=lanczos, SIM=NO
9, , ,-1.E6 
*OUTPUT,FIELD
*MODAL OUTPUT
*CONTROLS,PARAMETERS=FIELD
1.E-14, 1., 10000. , , 1.E-12
*MODAL FILE
*END STEP
*STEP,NLGEOM
*STATIC
*DLOAD
7, P4, -10000.
9, P3, -10000.
12, P4, -10000.
14, P3, -10000.
17, P4, -10000.
19, P3, -10000.
22, P4, -10000.
24, P3, -10000.
27, P4, -10000.
29, P3, -10000.
32, P4, -10000.
34, P3, -10000.
*BOUNDARY
10,1,2
70,1,3
90,2,3
270,1
270,3
*EL PRINT,FREQ=0
*NODE PRINT
U,RF
*ENERGY PRINT,ELSET=E1,FREQ=999
*ENERGY FILE,ELSET=E1,FREQ=999
*END STEP
*STEP,NLGEOM
*FREQUENCY, eigensolver=lanczos, SIM=NO
9, , , -1.E+2 
*OUTPUT,FIELD
*MODAL OUTPUT
*EL PRINT,FREQ=0
*NODE PRINT,FREQ=0
*BOUNDARY,OP=NEW
*MODAL FILE
*END STEP