*HEADING
360 DEGREES MODEL CORRESPONDING TO 1X2 MESH S8R ELEMENTS
*PREPRINT, ECHO=YES, MODEL=YES, HISTORY=YES
*NODE
      1,         -30.,           0.
      2,           0.,          30.
      3,           0.,          50.
      4,         -50.,           0.
      5,         -10.,           0.
      6,           0.,          10.
      7,           0.,         -30.
      8,           0.,         -50.
      9,           0.,         -10.
     10,          30.,           0.
     11,          50.,           0.
     12,          10.,           0.
     13,         -15.,          15.
     14,           0.,          40.
     15,         -25.,          25.
     16,         -40.,           0.
     17,         -20.,           0.
     18,          -5.,           5.
     19,           0.,          20.
     20,         -15.,         -15.
     21,         -25.,         -25.
     22,           0.,         -40.
     23,           0.,         -20.
     24,          -5.,          -5.
     25,          15.,         -15.
     26,          15.,          15.
     27,          25.,         -25.
     28,          40.,           0.
     29,          25.,          25.
     30,          20.,           0.
     31,           5.,          -5.
     32,           5.,           5.
*ELEMENT, TYPE=S8R
1,  1,  2,  3,  4, 13, 14, 15, 16
2,  2,  1,  5,  6, 13, 17, 18, 19
3,  7,  1,  4,  8, 20, 16, 21, 22
4,  1,  7,  9,  5, 20, 23, 24, 17
5, 10,  7,  8, 11, 25, 22, 27, 28
6,  7, 10, 12,  9, 25, 30, 31, 23
7,  2, 10, 11,  3, 26, 28, 29, 14
8, 10,  2,  6, 12, 26, 19, 32, 30
*ELSET, ELSET=EALL, GENERATE
1, 8, 1
*NSET, NSET=NBC
  5,  6,  9, 12, 18, 24, 31, 32
*SHELL SECTION, ELSET=EALL,MATERIAL=MAT
1., 
*MATERIAL,NAME=MAT
*ELASTIC
10E8,0.3
*DENSITY
100, 
*STEP
*FREQUENCY, EIGENSOLVER=LANCZOS, SIM=NO
12,
*OUTPUT, FIELD, FREQUENCY=0
*END STEP