*HEADING
 SIMPLY SUPPORTED SQUARE PLATE WITH UNIFORM PRESSURE---SC8R 4 X 4 MESH 80 DEG
*PREPRINT,ECHO=YES,MODEL=NO,HISTORY=NO
*NODE, NSET=CORNERS
*NGEN,NSET=BOT
*NGEN,NSET=TOP
*NFILL
BOT,TOP,4,100
*NSET,NSET=SIDES_BOTTOM,GENERATE
*NSET,NSET=SIDES_TOP,GENERATE
*NSET,NSET=CENTND
*ELEMENT, TYPE=SC8R
*ELGEN,ELSET=ALLELS
*ELSET,ELSET=CENTER
*MATERIAL ,NAME=METAL
*ELASTIC
3.E7,  .3
*SHELL SECTION,MATERIAL=METAL,ELSET=ALLELS
.01,3
** *BOUNDARY
** SIDES,1,3
*EQUATION
 SIDES_BOTTOM, 1, 1.0, SIDES_TOP, 1, 1.0
 SIDES_BOTTOM, 2, 1.0, SIDES_TOP, 2, 1.0
 SIDES_BOTTOM, 3, 1.0, SIDES_TOP, 3, 1.0
*STEP
*STATIC
*DLOAD
ALLELS,P1,-1.
*NODE PRINT, NSET=CENTND
U,
*EL PRINT, ELSET=CENTER, POSITION=AVERAGED AT NODES
SF,
*NODE FILE, NSET=CENTND
U,
*OUTPUT,FIELD
*NODE OUTPUT
U,
*EL FILE, ELSET=CENTER, POSITION=AVERAGED AT NODES
SF,
*END STEP