*HEADING
fv21t_s4rs_vf: NAFEMS FORCED VIBRATION; TEST 21T; [S4RS]
(DIRECT INTEGRATION)
*RESTART,WRITE,NUM=2, TIMEMARKS=NO
*NODE
1, 0.
9, 10.
81, 0., 10.
89, 10.,10.
*NGEN,NSET=BOT
1,9
*NGEN,NSET=TOP
81,89
*NFILL,NSET=NALL
BOT,TOP,8,10
*NSET,NSET=LEFT,GEN
1,41,10
*NSET,NSET=EDGE
BOT,LEFT
*NSET,NSET=SIDEX,GEN
5,45,10
*NSET,NSET=SIDEY,GEN
41,45,1
*NSET,NSET=NMID
45, 
*ELEMENT,TYPE=S4RS
1, 1,2,12,11
*ELGEN,ELSET=ALLE
1, 4,1,1, 4,10,4
*ELSET,ELSET=EMID
16, 
*SECTION CONTROLS, NAME=HG
0.2,0.2,0.2
*SHELL SECTION,MATERIAL=MAT,ELSET=ALLE,CONTROLS=HG
1.0, 
*MATERIAL,NAME=MAT
*DENSITY
8000.,
*ELASTIC
200.E9,0.3
*DAMPING,ALPHA=5.772,BETA=6.929E-5
*BOUNDARY
NALL,1,2
NALL,6
EDGE,1,3
BOT,5
LEFT,4
SIDEX,XSYMM
SIDEY,YSYMM
**
** Transient Load
** --------------
**
*NSET,NSET=QA_TEST_SIDEX
SIDEX,
**
*STEP
*DYNAMIC,EXPLICIT
**0.0001,0.05
 ,0.05
*DLOAD
ALLE,P,1.E6
***OUTPUT,HISTORY,TIME INTERVAL=0.5E-3
***NODE OUTPUT,NSET=NMID
**U,
***ELEMENT OUTPUT,ELSET=EMID
**S,
***ENERGY OUTPUT
**ALLWK,ALLIE,ALLKE,ALLAE,ALLVD,ETOTAL,DT
*FILE OUTPUT,NUM=4, TIMEMARKS=YES
*NODE FILE, NSET=SIDEX
U, 
*ENERGY FILE
*OUTPUT, FIELD, NUMBER INTERVAL=4, TIMEMARKS=YES
*NODE OUTPUT, NSET=QA_TEST_SIDEX
U, 
*OUTPUT,FIELD,VARIABLE=PRESELECT
*OUTPUT,HISTORY,VARIABLE=PRESELECT,TIMEINT=0.0125
*ENDSTEP
**
** Increase the damping and timestep to find steady state
**
*STEP
*DYNAMIC,EXPLICIT
,2.0
** ,1.75
*DLOAD
ALLE,P,1.E6
*FILE OUTPUT,NUM=4, TIMEMARKS=YES
*NODE FILE, NSET=SIDEX
U, 
*ENERGY FILE
*OUTPUT, FIELD, NUMBER INTERVAL=4, TIMEMARKS=YES
*NODE OUTPUT, NSET=QA_TEST_SIDEX
U, 
*OUTPUT,FIELD,VARIABLE=PRESELECT
*OUTPUT,HISTORY,VARIABLE=PRESELECT,TIMEINT=0.5
*ENDSTEP