*HEADING
 VIBRATION OF A CANTILEVER PLATE  10 * 20  STRI3   
*PREPRINT,MODEL=NO,HISTORY=NO
*NODE
1,
41, 2.
2001, , 1.
2041 , 2. , 1.
*NGEN,NSET=FIXED
1,  2001 , 100
*NGEN,NSET=END
41, 2041, 100
*NFILL
FIXED,END,20,2
*ELEMENT,TYPE=STRI3
1,  1,3,203
2,  1,203,201
*ELGEN,ELSET=CANTLEVR
1,10,200,2,20,2,100
2,10,200,2,20,2,100
*MATERIAL,NAME=MAT
*ELASTIC
30.E6     ,0.3
*DENSITY
0.0007324, 
*SHELL SECTION,ELSET=CANTLEVR,MATERIAL=MAT
0.01  , 3
*BOUNDARY
FIXED,1,6
*STEP
*FREQUENCY, eigensolver=lanczos, SIM=NO
5 , , 
*EL PRINT,FREQUENCY=0
*NODE PRINT,FREQUENCY=0
*MODAL FILE
*END STEP