*HEADING
360 DEGREES MODEL CORRESPONDING TO 1X2 MESH OF SC8R ELEMENTS
*PREPRINT, ECHO=YES, MODEL=YES, HISTORY=YES
*NODE
*ELEMENT, TYPE=SC8R
*ELSET, ELSET=EALL, GENERATE
*NSET, NSET=NBC
*SHELL SECTION, ELSET=EALL,MATERIAL=MAT
 1.,
*MATERIAL,NAME=MAT
*ELASTIC
10E8,0.3
*DENSITY
100,
*STEP
*FREQUENCY, EIGENSOLVER=LANCZOS
12,
*OUTPUT, FIELD, FREQUENCY=0
*END STEP