*HEADING
EC3FSFE2: EIGENVALUE ANALYSIS OF AN UNCONSTRAINED PATCH OF ELEMENTS  [C3D15]
*PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO
*NODE
 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.
 1010, .32,.186,.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
*NGEN
 10,30,10
 70,90,10
 10,70,30
 20,80,30
 30,90,30
 210,230,10
 270,290,10
 210,270,30
 220,280,30
 230,290,30
 10,210,100
 30,230,100
 40,240,100
 60,260,100
 70,270,100
 90,290,100
*****
 1010,1030,10
 1070,1090,10
 1010,1070,30
 1020,1080,30
 1030,1090,30
 1210,1230,10
 1270,1290,10
 1210,1270,30
 1220,1280,30
 1230,1290,30
 1010,1210,100
 1030,1230,100
 1040,1240,100
 1060,1260,100
 1070,1270,100
 1090,1290,100
*****
 10,1010,500
 30,1030,500
 40,1040,500
 50,1050,500
 60,1060,500
 70,1070,500
 90,1090,500
 140,1140,500
 160,1160,500
 210,1210,500
 230,1230,500
 240,1240,500
 250,1250,500
 260,1260,500
 270,1270,500
 290,1290,500
*****
 10,1070,530
 30,1090,530
 210,1270,530
 230,1290,530
 30,210,90
 1030,1210,90
 1090,1270,90
 90,270,90
*****
*ELEMENT,TYPE=C3D15,ELSET=ALL
  11,1010,  10,1070,1030,  30,1090, 510, 540,1040, 530, 560,1060,1020,  20,1080
  12,  10,  70,1070,  30,  90,1090,  40, 570, 540,  60, 590, 560,  20,  80,1080
  21,1210, 210,1270,1010,  10,1070, 710, 740,1240, 510, 540,1040,1110, 110,1170
  22, 210, 270,1270,  10,  70,1070, 240, 770, 740,  40, 570, 540, 110, 170,1170
  31,1070,1090,1270,1010,1030,1210,1080,1180,1170,1020,1120,1110,1040,1060,1240
  32,1090,1290,1270,1030,1230,1210,1190,1280,1180,1130,1220,1120,1060,1260,1240
  41,1030,  30,1090,1230, 230,1290, 530, 560,1060, 730, 760,1260,1130, 130,1190
  42,  30,  90,1090, 230, 290,1290,  60, 590, 560, 260, 790, 760, 130, 190,1190
  51,1230, 230,1290,1210, 210,1270, 730, 760,1260, 710, 740,1240,1220, 220,1280
  52, 230, 290,1290, 210, 270,1270, 260, 790, 760, 240, 770, 740, 220, 280,1280
  61,  70,  90, 270,1070,1090,1270,  80, 180, 170,1080,1180,1170, 570, 590, 770
  62,  90, 290, 270,1090,1290,1270, 190, 280, 180,1190,1280,1180, 590, 790, 770
  71,1010,1030,1210,  10,  30, 210,1020,1120,1110,  20, 120, 110, 510, 530, 710
  72,1030,1230,1210,  30, 230, 210,1130,1220,1120, 130, 220, 120, 530, 730, 710
*****
*SOLID SECTION,ELSET=ALL,MATERIAL=MATNAME
*MATERIAL,NAME=MATNAME
*ELASTIC
 1.E6,.25
*DENSITY
7.5E-4, 
*STEP
*FREQUENCY, eigensolver=lanczos, SIM=NO
9, , ,-1.E7
*OUTPUT,FIELD
*MODAL OUTPUT
*CONTROLS,PARAMETERS=FIELD
1.E-8, 1., 10000. , , 1.E-12
*END STEP
*STEP,NLGEOM
*STATIC
*DLOAD
12, P3, -10000.
22, P3, -10000.
42, P3, -10000.
52, P3, -10000.
61, P1, -10000.
62, P1, -10000.
71, P2, -10000.
72, P2, -10000.
*BOUNDARY
10,1,2
70,1,3
90,2,3
270,1
270,3
*EL PRINT,FREQ=0
*NODE PRINT
U,RF
*END STEP
*STEP,NLGEOM
*FREQUENCY, eigensolver=lanczos, SIM=NO
9, , , -1.E+7 
*OUTPUT,FIELD
*MODAL OUTPUT
*EL PRINT,FREQ=0
*NODE PRINT,FREQ=0
*BOUNDARY,OP=NEW
*END STEP