*HEADING
ELEMENT TESTED      : S8R
SLAVE SURFACE TYPE  : NODE
MASTER SURFACE TYPE : NODE
*PREPRINT, ECHO=YES, MODEL=YES, HISTORY=YES
*NODE
      1,          30.,           0.
      2,           0.,          30.
      3,           0.,          10.
      4,          10.,           0.
      5,          50.,           0.
      6,           0.,          50.
      7,          15.,          15.
      8,           0.,          20.
      9,           5.,           5.
     10,          20.,           0.
     11,          40.,           0.
     12,          25.,          25.
     13,           0.,          40.
*ELEMENT, TYPE=S8R, ELSET=EALL
1,  1,  2,  3,  4,  7,  8,  9, 10
2,  2,  1,  5,  6,  7, 11, 12, 13
*NSET, NSET=NBC
 3, 4, 9
*NSET, NSET=NSLAVE
  1,  4,  5, 10, 11
*NSET, NSET=NMASTER
  2,  3,  6,  8, 13
*SURFACE, NAME=SSLAVE, TYPE=NODE
NSLAVE,
*SURFACE, NAME=SMASTER, TYPE=NODE
NMASTER,
*SHELL SECTION, ELSET=EALL,MATERIAL=MAT
1., 
*MATERIAL,NAME=MAT
*ELASTIC
10E8,0.3
*DENSITY
100, 
*TIE, CYCLICSYM, POSITION=0.5, NAME=TIE1
 SSLAVE, SMASTER
*CYCLIC SYMMETRY MODEL,N=4
 0,0,0, 0,0,1
*STEP
*FREQUENCY, EIGENSOLVER=LANCZOS
12,
*OUTPUT, FIELD, FREQUENCY=0
*END STEP