*HEADING
 1D transient wave propagation, solid medium, incident wave load, planar
 and defined through pressure amplitude
**
** Analytical solution to prescribed constant acceleration of a0 at x=0
** 
** p(x,t) = (K a0 / c^2) (ct - x)  for x < ct
**        = 0  			   for x > ct
** 
*PREPRINT,ECHO=NO,HISTORY=NO,MODEL=YES
*NODE, NSET=ODB_NSET
   1, 0.,
  11,  .1,
 101, 0., 1E-2
 111,  .1, 1E-2
 151, 0. , 1E-2, -1E-2
 161,  .1, 1E-2, -1E-2
 251, 0., 0, -1E-2
 261,  .1, 0, -1E-2
*NGEN,NSET=CHANNEL
   1,11
 101,111
 151,161
 251,261
*NSET,NSET=SAMPLE,GENERATE
 1,11
*ELEMENT,TYPE=C3D6
 1,1,102,2,251,152,252
 2,1,101,102,251,151,152
*ELGEN,ELSET=CHANNEL
 1,10,1,2
 2,10,1,2
**************************
*SURFACE,NAME=IW_LOAD
2,S3
**************************
*SOLID SECTION,MATERIAL=SOLID,ELSET=CHANNEL
**
*MATERIAL,NAME=SOLID
*DENSITY
 1.E3,
*ELASTIC
 1.E6,0.0
**
**************************
*INCIDENT WAVE PROPERTY,NAME=IWPROP,TYPE=PLANE
0.0,0.0,0.0
-10,0.0,0.0
*INCIDENT WAVE FLUID PROPERTY
0.1424E6,1.21,0.0
*AMPLITUDE,DEFINITION=TABULAR,NAME=PRESSUREVTIME
0.0,0.0,0.0015,-1.0
**************************
**
*BOUNDARY
CHANNEL,2,3
 11,1,1
111,1,1
161,1,1
261,1,1
**************************
*RESTART,WRITE
**
*STEP
*DYNAMIC,EXPLICIT
 ,.0015,
**
*INCIDENT WAVE,PRESSUREAMPLITUDE=PRESSUREVTIME,PROPERTY=IWPROP
IW_LOAD,415.09517
**
*NSET,NSET=QA_TEST
SAMPLE,
*OUTPUT,FIELD,NUMBER INTERVAL=2
*NODE OUTPUT
U,
*NODE OUTPUT,NSET=QA_TEST
U,
*ELEMENT OUTPUT
S,
*OUTPUT,HISTORY,TIME INTERVAL=0.1E-3
*NODE OUTPUT,NSET=SAMPLE
 U,
*ENDSTEP