*HEADING
 RING BUCKLE EIGENVALUE ESTIMATE ( 1 SAXA12 )
*NODE
*ELEMENT,TYPE=SAXA12,OFFSET=100,ELSET=EALL
*ELSET,ELSET=ALL
*SHELL SECTION,MATERIAL=MAT,ELSET=EALL
 1.,3
*MATERIAL,NAME=MAT
*ELASTIC
 30.0E6,0.0
*NSET,NSET=NALL
*EQUATION
*BOUNDARY
 NALL,2
 NALL,6
*STEP
*BUCKLE
 1,
*DLOAD
 ALL,P,1.0
*MODAL FILE
*OUTPUT,FIELD,VAR=PRESELECT
*END STEP