*HEADING
 STIFFNESS PROPORTIONAL MATERIAL DAMPING TEST
 2D TRUSSES - IN PLANE PULSE - ELASTIC 
*NODE, NSET=QA_TEST_ALLNODES
1,     0., 0.
101, 100., 0.
*NGEN,NSET=ALL
1,101,1
*ELEMENT,TYPE=T2D2,ELSET=TRUSS
1,1,2
*ELGEN,ELSET=TRUSS
1,100,1,1
*SOLID SECTION, ELSET=TRUSS,MATERIAL=MAT1
1.0,
*MATERIAL,NAME=MAT1
*ELASTIC
64000.,.33
*DENSITY
1000.,
*DAMPING,BETA=1.0E-2
**
*BOUNDARY
ALL, 2, 6, 0.0
*AMPLITUDE,NAME=PULSE
 .0,  .00000,  .1,  .15644,  .2,  .30902,  .3,  .45399
 .4,  .58778,  .5,  .70711,  .6,  .80902,  .7,  .89101
 .8,  .95106,  .9,  .98769, 1.0, 1.00000, 1.1,  .98769
1.2,  .95106, 1.3,  .89101, 1.4,  .80902, 1.5,  .70711
1.6,  .58778, 1.7,  .45399, 1.8,  .30902, 1.9,  .15644
2.0, 0.00000
*NSET,NSET=NOUT,GENERATE
1,101,10
*ELSET,ELSET=EOUT
50,
**
**
*ELSET,ELSET=QA_TEST_ALLELEMS
TRUSS,
**
*NSET, NSET=QA_TEST_ALLNODES
QA_TEST_ALLNODES, ALL, NOUT
**
*STEP
*DYNAMIC,EXPLICIT
,400.0
*CLOAD,AMPLITUDE=PULSE
1,1,1,10.0
*BULK VISCOSITY
0.0,0.0
**
*FILE OUTPUT,NUMBER=2,TIMEMARKS=YES
*EL FILE
 S,LE
*NODE FILE
 U,
**
*OUTPUT, FIELD, NUMBER INTERVAL=2, TIMEMARKS=YES
*ELEMENT OUTPUT, ELSET=QA_TEST_ALLELEMS
 S,LE
*NODE OUTPUT, NSET=QA_TEST_ALLNODES
 U,
*OUTPUT,FIELD,VARIABLE=PRESELECT
*OUTPUT,HISTORY,VARIABLE=PRESELECT,TIMEINT=200
***OUTPUT,HISTORY,VARIABLE=PRESELECT
*END STEP