*HEADING
360 DEGREES MODEL CORRESPONDING TO 2X2 MIS-MATCHED MESH OF CPE4R ELEMENTS
*PREPRINT, ECHO=YES, MODEL=YES, HISTORY=YES
*NODE
      1,           5.,          -5.
      2,          25.,         -25.
      3,          50.,           0.
      4,          10.,           0.
      5,           0.,         -10.
      6,           0.,         -50.
      7,          -5.,          -5.
      8,         -25.,         -25.
      9,         -10.,           0.
     10,         -50.,           0.
     11,          -5.,           5.
     12,         -25.,          25.
     13,           0.,          10.
     14,           0.,          50.
     15,           5.,           5.
     16,          25.,          25.
     17,          22.,           0.
     18,      13.9333,      13.9333
     19,           0.,          38.
*SYSTEM
 0., 0., 0., 0., 1., 0.
*NODE
     20,          22.,           0.
     21,      13.9333,      13.9333
     22,           0.,          38.
*SYSTEM
 0., 0., 0., -1., 0., 0.
*NODE
     23,          22.,           0.
     24,      13.9333,      13.9333
     25,           0.,          38.
*SYSTEM
 0., 0., 0., 0., -1., 0.
*NODE
     26,          22.,           0.
     27,      13.9333,      13.9333
     28,           0.,          38.
*ELEMENT, TYPE=CPE4R, ELSET=EALL
1, 16, 18, 17, 3
2, 14, 19, 18, 16
3, 18, 15, 4, 17
4, 19, 13, 15, 18
5, 12, 21, 20, 14
6, 12, 10, 22, 21
7, 21, 22, 9, 11
8, 20, 21, 11, 13
9, 8, 24, 23, 10
10, 8, 6, 25, 24
11, 23, 24, 7, 9
12, 24, 25, 5, 7
13, 2, 27, 26, 6
14, 2, 3, 28, 27
15, 26, 27, 1, 5
16, 27, 28, 4, 1
*MPC
LINEAR, 28, 17, 3
LINEAR, 19, 20, 14
LINEAR, 22, 23, 10
LINEAR, 25, 26, 6
*SOLID SECTION, ELSET=EALL,MATERIAL=MAT
1., 
*MATERIAL,NAME=MAT
*ELASTIC
10E8,0.3
*DENSITY
100, 
*STEP
*FREQUENCY,EIGENSOLVER=LANCZOS, SIM=NO
14,
*OUTPUT, FIELD, FREQUENCY=0
*END STEP