*HEADING
 SQUARE PLATE - ELASTIC BUCKLING  ( THERMAL EXP.  LOAD INCR. ) 
*NODE,NSET=N101
101,  ,  ,1.E-4
*NODE,NSET=N105
105,1.
501,0.,1.
505,1.,1.
*NGEN,NSET=YSYM
101,105
*NGEN,NSET=XSYM
101,501,100
*NGEN,NSET=YEDG
501,505
*NGEN,NSET=XEDG
105,505,100
*NFILL,NSET=TEMP
XSYM,XEDG,4,1
*ELEMENT,TYPE=S4R,ELSET=EPRINT
1,101,102,202,201
*ELGEN,ELSET=EALL
1,4,1,1,4,100,4
*SHELL SECTION,MATERIAL=A1,ELSET=EALL
0.01,3
*MATERIAL,NAME=A1
*ELASTIC
1.E8,0.3
*EXPANSION
1.E-6, 
*BOUNDARY
YSYM,YSYMM
XSYM,XSYMM
YEDG,3
YEDG,5
XEDG,3
XEDG,4
XEDG,1
XEDG,6
*STEP,NLGEOM,INC=20
*STATIC
 .1,1. , , .1
*TEMPERATURE
TEMP,100.
*PRINT,RESIDUAL=NO
*EL PRINT,ELSET=EPRINT ,SUMMARY=NO,POSITION=CENTROID
S, 
*EL FILE,ELSET=EPRINT ,POSITION=CENTROID
S,TEMP
*NODE PRINT,SUMMARY=NO
U, 
*NODE FILE,NSET=N101
U, 
*END STEP