*HEADING
 1D transient wave propagation, solid  medium, incident wave load, planar
 and defined through pressure amplitude 
 Use *BEAM FLUID INERTIA with B32, *BEAM GENERAL SECTION,
 ROTARY INERTIA=ISOTROPIC
**
*PREPRINT,ECHO=NO,HISTORY=NO,MODEL=YES
*NODE,NSET=BEAM
1,0.0 ,
2,0.5,
3,1.0,0.0
*ELEMENT,TYPE=B32,ELSET=BEAM
1,1,2,3
**************************
*SURFACE, NAME=IW_LOAD
BEAM,S1
**************************
*BEAM GENERAL SECTION,SECTION=RECT,DENSITY=1.E3,ELSET=BEAM,
ROTARY INERTIA=ISOTROPIC
2.E-2, 1.E-2
0.0, 0.0,  -1.
1.E6
*BEAM FLUID INERTIA, FULL
1.21,0.0,0.0,0.01,1.0,0.0
**
**************************
*INCIDENT WAVE PROPERTY,NAME=IWPROP,TYPE=PLANE
0.5,0.0
0.5,10.0
*INCIDENTWAVE FLUID PROPERTY
0.1424E6,1.21,0.0
*AMPLITUDE,DEFINITION=SMOOTH STEP,NAME=PRESSUREVTIME
0.0,0.0,0.0005,1.0,.0010,0.0
**************************
*BOUNDARY
BEAM,ENCASTRE
**
**************************
*RESTART,WRITE
**
*STEP
*DYNAMIC, EXPLICIT, DIRECT
 .0001,.0010
*INCIDENTWAVE,PRESSUREAMPLITUDE=PRESSUREVTIME,PROPERTY=IWPROP
IW_LOAD,1.E3
**
*OUTPUT,FIELD, OP=ADD,NUMBER=1
*NODE OUTPUT
 RF,
*OUTPUT,HISTORY,OP=ADD,FREQUENCY=1
*NODE OUTPUT,NSET=BEAM
 RF,
*ENDSTEP
**
**